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Benign adrenal vascular tumors, cysts, and pseudocysts are a heterogeneous group of relatively uncommon entities that may pose diagnostic challenges radiologically and pathologically. However, there are only a few small cases series systematically characterizing the clinicopathological features of these lesions. We identified 55 cases of benign adrenal vascular tumors, cysts, and pseudocysts (23 pseudocysts, 17 hemangiomas, 8 lymphangiomas, 6 angiomatous endothelial cysts, and 1 arteriovenous malformation) from a multi-institutional urologic pathology database between 2000 and 2017 and retrospectively analyzed their clinicopathological features. We found that these lesions have a female predominance and most are right sided. These lesions may occur simultaneously with other adrenal tumors associated with hormonal hypersecretion. A substantial portion of pseudocysts were semisolid or solid with no fluid collection, mimicking a solid adrenal tumor and resulting in adrenalectomy. In addition, a small proportion of benign vascular lesions may have coexisting epithelial tumors, requiring extensive specimen sampling and thorough microscopic examination., (Copyright © 2018 Elsevier Inc. All rights reserved.)

Rationale: Hemolymphangioma is a rare, noninvasive benign tumor of mesenchymal origin resulting from malformation of vascular and lymphatic vessels. The incidence of hemolymphangioma in the spinal canal is low., Patient Concerns: This report describes 2 patients with a lesion located in the thoracic spinal canal or spinal epidural space, who were misdiagnosed with suspected meningioma or suspected schwannoma, respectively, based on magnetic resonance imaging (MRI)., Diagnoses: Hemolymphangioma., Interventions: The application of a surgery was designed to treat the 2 patients., Outcomes: 2 patients stated that symptoms were improved after the operation., Lessons: This report should raise awareness among clinicians that careful image analysis and consideration of patient history and pathology is required for accurate differential diagnosis of hemolymphangioma in the spinal canal and spinal epidural space., (Copyright © 2017 The Authors. Published by Wolters Kluwer Health, Inc. All rights reserved.)

Infantile hemangiomas are the most common benign tumor of childhood. Lymphangiomas are benign hamartomatous vascular tumors. Both lesions can be problematic when located in the periocular region. Pediatricians must be familiar with the characteristics of each which would necessitate referral to an ophthalmologist or other subspecialist for evaluation, including obstruction of the visual axis which can lead to amblyopia of the affected eye. Additional potential complications include proptosis, ocular motility limitation, optic nerve injury, and poor eyelid closure with or without corneal surface disease. All children with periocular hemangiomas or lymphangiomas should be referred to an ophthalmologist for further evaluation., (Copyright © 2014 Elsevier Inc. All rights reserved.)

Hemolymphangioma is a malformation of both lymphatic and blood vessels. The incidence of splenic hemolymphangioma is extremely rare. Laparoscopic partial splenectomy is feasible, reproducible, and safe in children with focal splenic tumors. We report on the case of a 12-year-old male with a large splenic hemolymphangioma successfully managed by laparoscopic partial splenectomy. The patient recovered well after operation. Laparoscopic partial splenectomy is a safe and minimally invasive technique for treatment of splenic hemolymphangioma located in the pole of the spleen.

Background: The term "diffuse neonatal hemangiomatosis" has been used historically to describe multifocal vascular lesions affecting the skin and viscera in infants., Objective: We hypothesized that many cases reported as diffuse neonatal hemangiomatosis did not have infantile hemangiomas (IH), but represented more recently described neonatal vascular diseases., Methods: A literature search was performed using PubMed database (1950-2009) with the terms "neonatal hemangiomatosis," "benign hemangiomatosis," and "diffuse hemangiomatosis." A total of 180 articles were identified. Exclusion criteria included disease onset later than 3 years of age and absence of multifocal skin involvement. In all, 73 cases were selected and categorized into 3 groups: IH/probable IH; multifocal lymphangioendotheliomatosis with thrombocytopenia (MLT)/probable MLT; and multifocal vascular lesions, not otherwise specified., Results: Of the 73 cases, 43 had IH/probable IH, 17 had MLT/probable MLT, and 13 had multifocal vascular lesions, not otherwise specified. The clinical outcomes of these groups differed in that two of 43 (5%) patients with IH died whereas 11 of 17 (65%) patients with MLT died (odds ratio 37.6, confidence interval 5.6-387.6, P value < .0001)., Limitations: This was a literature-based meta-analysis, which inherently has limitations of incomplete and inconsistently presented information., Conclusions: Many cases reported in the literature as diffuse neonatal hemangiomatosis represent newly described multifocal vascular anomalies such as MLT, which has a strikingly higher mortality than IH. We propose the term "multifocal infantile hemangioma-with or without extracutaneous disease" instead of "diffuse neonatal hemangiomatosis" for multiple cutaneous IH. Accurate diagnosis of multifocal neonatal vascular lesions is imperative to facilitate appropriate evaluation, treatment, and prognosis., (Copyright © 2012 American Academy of Dermatology, Inc. Published by Mosby, Inc. All rights reserved.)

Small intestinal hemolymphangioma is a very rare benign tumor. There was only one report of a hemolymphangioma of the pancreas invading to the duodenum until March 2011. Here we describe the first case of small intestinal hemolymphangioma with bleeding in a 57-year-old woman. She presented with persistent gastrointestinal bleeding and endoscopy revealed a small intestinal tumor. Partial resection of the small intestine was thus performed and the final pathological diagnosis was hemolymphangioma. We also highlight the difficultly in making an accurate preoperative diagnosis in spite of modern imaging techniques. To arrive at a definitive diagnosis and exclude malignancy, partial resection of the small intestine was considered to be the required treatment.

Gastric haemolymphangioma is a very rare benign tumour. Pathologically, it is composed of lymphatic vessels and blood vessels. Only a few cases of haemolymphangioma have been reported in the literature so far, all of which developed at sites other than the stomach. The authors believe that a haemolymphangioma occurring in the stomach has not been previously reported. The patient was a healthy 68-year-old male who had felt light epigastric discomfort for 3 months. A CT scan and a gastrofiberscope examination revealed a well-demarcated mass on the posterior wall of the stomach near the lesser curvature. The mass was successfully removed by surgery. During the 18-month follow-up period, the patient was asymptomatic with no recurrence. In this case report, we discuss the imaging findings as well as the pathological features of this unusual case, with a review of the related literature.

Benign vascular tumors arising primarily in lymph nodes are rare. The importance of identifying these entities is to avoid misdiagnosing them as malignant vascular tumors, which occur more often in lymph nodes. Hemangioma is a benign nodal vascular tumor, but its occurrence in lymph nodes is extremely rare. Hemangiomas can occur at any age, mostly in females. It is usually asymptomatic, affects only one node, and does not recur. Four histologic types of hemangioma have been identified: capillary/cavernous, lobular capillary, cellular, and epithelioid. This review highlights the key features of previously reported cases and discusses the differential diagnosis.

Purpose: The purpose of our study was to describe the morphological features of gastrointestinal vascular malformations (VM) and of hemangiolymphangiomas (HLA) and to establish correlations with clinical characteristics. Significant findings: Fifteen VMs and 12 HLAs that were encountered over a period of 22 years, were retrospectively analyzed. The VMs often involved the colon, small intestine, but also the stomach, whereas none of the HLAs arose in the stomach. VMs were more frequently associated with gastrointestinal bleeding, ulcer and were larger than HLAs (p<0.01 for all comparisons). Intralesional hemorrhage and thrombosis were associated with VM (p=0.02 and p=0.05). Surgical resection was performed for 1 HLA and 14 VMs. Vessel abnormalities such as shunt vessels, wall tufts (excrescences) and arterialized veins were more frequent in VMs (p=0.01, p=0.04 and <0.01, respectively) whereas aneurysm-like cavities were observed in both lesion types. Mucosal abnormal vessels were observed only in VMs, whereas HLAs were associated with mucosal lymphatic clusters (p<0.01). Most HLAs contained a D2-40 hetero-geneously positive lymphatic component, were Glut-1 negative and CD31 reactive. There was no statistical difference in occurrence of associated autoimmune, tumoral and cardiovascular conditions between the two patient groups., Conclusions: The results of our study suggest that morphological features such as increased size, ulcer, thrombosis, hemorrhage and presence of aberrant mucosal vessels favor the diagnosis of VM. Co-existence of other clinical conditions such as cardiovascular disease, encountered in association with both lesion types, might exacerbate a tendency towards hemorrhage.

Purpose: To identify common radiographic features of pediatric orbital tumors by the use of magnetic resonance imaging (MRI) techniques, diffusion-weighted imaging (DWI), fat saturated T2, and pre- and postgadolinium T1. DWI is hypothesized to help identify and predict the malignancy of specific brain tumors. To our knowledge, a similar analysis in which the authors have used this combination of MRI techniques has not been performed with orbital tumors., Methods: We performed a retrospective chart review of all patients younger than 18 years of age, each diagnosed with an orbital mass lesion, imaged by MRI from 2005 to 2008. The MR images were analyzed by use of the aforementioned techniques., Results: Mass lesions identified in the chart review included rhabdomyosarcoma (n = 4), myofibroma (n = 2), hemangioma (n = 4), lymphangioma (n = 2), neurofibroma (n = 4), Langerhans histiocytosis (n = 2), and one of each of the following: giant cell tumor, meningioma, lymphoid hyperplasia of the lacrimal gland (chronic sclerosing sialadenitis), optic nerve glioma, lipodermoid, and dermoid. DWI was used to differentiate tumors into those with increased diffusion, restricted diffusion, and a mixed diffusion pattern. Capillary hemangiomas and rhabdomyosarcomas 2 tumors with potentially overlapping appearances with traditional MRI techniques had contrasting appearances with DNI., Conclusions: DWI can help to distinguish among certain pediatric orbital tumors when combined with traditional MRI techniques. This technique may thus be considered an additional tool to help, refine the differential diagnosis of orbital tumors in children.

Vascular lesions of the orbit in children are most often hemangiomas and lymphangiomas. Hemangioma is a tumor that tends toward spontaneous regression. Lymphangioma is a malformation that tends to increase in size with growth spurts that can occur until adulthood. The treatment is decided according to the functional impact., (Copyright 2010 Elsevier Masson SAS. All rights reserved.)

Objective: To analyze the clinical, imaging and pathological findings of congenital intrapulmonary lymphangioma and hemangioma in 5 infants and young children., Method: Data of 3 cases with congenital intrapulmonary lymphangioma and 2 cases with haemangioma were analyzed., Result: All the 5 cases had cough, difficulty in breathing, cyanosis of lips, and shortness of breath. Imaging study indicated cystic and space occupying changes of partial lung. In the two cases of hemangioma, the blood vessels passing through the hemangioma were observed on CT films. Histochemical studies showed that the cystic pockets from removed tissues were different in size and there was a line of flat endothelial tissue around these pockets. Immunochemical studies indicated D2-40 positive, factor VIII weak positive for lymphangioma cases; while in hemangioma cases, factor VIII was positive, D2-40 was negative or weakly positive, and both of cytokeratin was negative., Conclusion: It is very important to consider and identify congenital intrapulmonary lymphangioma or hemangioma when a patient has cystic pockets and space occupying change in their lung by imaging and pathological studies.

Vascular proliferations of the spleen reflect the variability of vascular structures occurring in the normal spleen. Besides haemangiomas, there is a spleen-specific vascular neoplasm, littoral cell angioma, that often occurs as a paraneoplastic lesion and thus may require the differential diagnostic delineation of metastases to the spleen in patients with known neoplasms. The most common malignant vascular tumours of the spleen are angiosarcomas. A recently described vascular lesion of unknown pathogenesis, sclerosing angiomatoid nodular transformation (SANT) of the spleen, usually is an incidental finding detected in the course of imaging studies.

Vascular malformations are anomalies always present at birth that, contrary to hemangiomas, never regress and may grow during lifetime. Clinical presentation of vascular malformations is extremely variable and ranges from asymptomatic spots of mere aesthetic concern to lesions with high blood flow or located in critical sites that may be life-threatening. Given the low incidence of these disorders it is difficult to establish therapeutic guidelines. In addition to a correct classification of vascular anomalies, it is necessary a multidisciplinary approach for the follow-up and management of these patients. The first part of this review focuses on the different classifications of vascular anomalies, maintaining as reference the one proposed by the International Society for the Study of Vascular Anomalies (ISSVA). Additionally, clinical features of the different subtypes of vascular anomalies as well as their association in certain syndromes are reviewed.

This paper presents the case of a male patient, 57 years old, admitted to the hospital for upper digestive bleeding revealed by melena stools. The upper digestive endoscopy has not discovered the source of bleeding. Conventional medical therapy, with hemostatics, proton pump blockers and transfusion, failed to stop the bleeding, requiring emergency surgery for stopping the bleeding. The intraoperative exploration discovered three submucosal formations with dimensions between 0,5 and 0,75 cm, who ulcerated the jejunal mucosa, situated at 20-25cm from the duodeno-jejunal angle. The pathologic report described haemorrhagic intestinal lymphangioma. The excision of the sub-mucosal haemangioma stopped the bleeding.

Background: Vascular anomalies are vascular tumors and congenital malformations that rarely involve the pancreas. Diagnosis and management of these lesions is complex., Methods: An institutional review board-approved retrospective database and record review from 1994 through 2004 at a quaternary referral center for vascular anomalies was conducted., Results: Of 5051 patients with a vascular anomaly, 6 had a lesion involving the pancreas. All patients were younger than 3 years. There were three tumors (two infantile hemangiomas and one Kaposiform hemangioendothelioma) and three malformations (two lymphatic and one venous). The referring diagnoses were correct for 4 patients. All anomalies were diagnosed with a combination of cross-sectional imaging and angiography. Five patients received medical therapy including two malformation patients who were initially treated with antiangiogenic drugs. Two patients with lymphatic malformations underwent operative intervention. One infantile hemangioma was treated with percutaneous biliary drainage for obstructive jaundice., Conclusion: Complex pancreatic vascular anomalies are rare. Vascular tumors are generally amenable to treatment with antiangiogenic medications. Operative resection is reserved for refractory cases or complications. Symptomatic vascular malformations are treated exclusively by surgery. Evaluation and management of these lesions is complex and may benefit from coordinated interdisciplinary care.

Chorioangioma is a benign tumor ot aberrant vessels originated from the chorion. This is a case study of a 22 year-old woman presented at 22 weeks of her first gestation with polyhydramnios and a sonographic finding consistent with placental chorioangioma. The fetus developed hydrops two weeks later. After three more days the patient was admitted due to abdominal pain and vaginal bleeding. The membranes ruptured spontaneously. Five hours from admission she delivered spontaneously a dead 1450 grams male abortus. Uterine revision was performed due to incomplete placental expulsion. A solid mass was removed during the procedure. The mass was sent to pathology and was diagnosed as placental chorioangioma. Large chorioangioma require careful follow-up due to the possibility of rapid deterioration in fetal condition.

The CT manifestation of lymphangiohemangioma in a 17-year-old boy is reported. A mass composed of the central malformed, dilated venous channels and peripheral unenhanced soft tissue was revealed in the anterior mediastinum. The venous feeding enhancement of the mass is very characteristic. The diagnosis of lymphangiohemangioma was made by pathologic study of the surgical specimen.

Hemangioma and venous lymphatic malformation are the two most common orbital vascular lesions occurring in the pediatric patient. MR imaging precisely delineates and characterizes these lesions and thus plays an important role in their diagnosis and management. This article discusses the characteristic clinical and imaging findings of hemangiomas and venous lymphatic malformations and the controversies regarding the origin and nomenclature of vascular lesions.

Background: Hobnail hemangioma (targetoid hemosiderotic hemangioma) is a small benign vascular tumor of the superficial and mid-dermis. In contrast to its well-characterized histology, it has been unclear whether this tumor arises from blood vessel endothelial cells (BECs) or lymphatic vessel endothelial cells (LECs)., Methods: We analyzed 10 hobnail hemangiomas by immunohistochemistry, using the recently described lymphatic endothelial cell marker, D2-40. For comparison, CD31, CD34, and alpha-smooth muscle actin expression were studied in consecutive sections of the paraffin-embedded tissues., Results: In all analyzed vessels, D2-40 labeled exclusively LECs, whereas BECs were consistently negative. In contrast to capillary BECs, either neighboring the tumors or intermingled, neoplastic endothelial cells of all 10 hobnail hemangiomas were strongly labeled by D2-40., Conclusions: The results suggest a lymphatic origin for hobnail hemangiomas. This view is further supported by the CD34 negativity of endothelial cells and the lack of actin-labeled pericytes in hobnail hemangiomas, both characteristic of lymphatic vessels. Moreover, our analysis revealed that microshunts between neoplastic lymphatic vascular channels and small blood vessels occur, explaining some features of hobnail hemangiomas, such as aneurysmatic microstructures, erythrocytes within and beneath neoplastic vascular spaces, inflammatory changes, scarring, and interstitial hemosiderin deposits.

A case of fetal axillary hemangiolymphangioma coexisting with intralesional hemorrhage is presented. At 27 weeks' gestation, the fetus was found to have a 52 x 43-mm left axillary multilocular cystic mass which showed no signals on color Doppler. The mass was composed mostly of sonolucent spaces. At 29 weeks' gestation, an arterial flow signal (15 cm/s) was detected within the mass. In addition, two low-density echogenic cystic spaces with bidirectional flow waveforms were found, which raised the suspicion of intratumoral bleeding. Two weeks later, a fine-needle aspiration of the mass revealed both straw-colored and chocolate-colored fluid. The tumor size increased from 52 x 43 mm at 27 weeks to 100 x 79 mm at 37 weeks. Blood clots developed gradually in the hemorrhagic spaces. The pregnancy proceeded smoothly to term and at 38 weeks an elective Cesarean section was performed. After a surgical excision of the mass at the age of 4 days, a mixed cavernous hemangioma and cystic lymphangioma with secondary intralesional hemorrhage was confirmed histopathologically.

Background: Noninflammatory masses of the salivary gland region in children are extremely rare. Therefore, very few published individual and institution-based experiences exist., Design: Retrospective chart review from 1990 through 1997., Setting: University-based children's hospital., Design: Patients 18 years of age or younger with a tumor in the salivary gland region. Masses of infectious origin were excluded. Hemangiomas and lymphangiomas were tallied for relative incidences only., Results: Three hundred twenty-four consecutive cases of salivary gland masses were found: 192 hemangiomas (59.2%), 89 lymphangiomas (27.5%), and 43 (13.3%) solid masses. No significant difference was found between the age at presentation of the patients with benign solid tumors and the patients with malignant solid tumors (mean + SEM age, 7.2 + 0.7 years). Sixty-one percent of the masses were found in the parotid region; 18% were localized to the submandibular gland region; and the remaining 21% were located in a minor salivary gland site. The most common benign perisalivary masses were pilomatrixomas (20.9%), followed by pleomorphic adenomas (11.6%). The most common malignant masses were mucoepidermoid carcinomas (9.3%), followed by rhabdomyosarcomas (7.0%). Treatment was individualized to the disease. Twenty-two patients had adequate data for follow-up analysis (mean + SEM follow-up, 30.0 + 8.4 months). Four patients (18.2%) experienced recurrent or residual disease and were alive with disease at last follow-up, and 100% of our population demonstrated disease-specific survival at last follow-up., Conclusions: Vascular lesions outnumber solid tumors of the salivary gland region. The most common salivary tumors were pleomorphic adenomas, followed by mucoepidermoid carcinomas. Although certain solid salivary masses may demonstrate locally aggressive behavior, the overall prognosis is favorable. Arch Otolaryngol Head Neck Surg. 2000;126:1435-1439

We present a case of mediastinal mesenchymal tumor in a 53-year-old woman with a 1-month history of chest tightness. A histological diagnosis of lymphangiohemangioma was obtained by excisional biopsy. CT findings are reported with emphasis on its association with intratumoral superior vena cava ectasia.

Primary vascular neoplasms of lymph nodes are rare, and appear not to have previously been reported in domestic animals. This report describes hemangiomas and a lymphangioma in lymph nodes of aged Beagle dogs. Eight hemangiomas (4.8%) and one lymphangioma were present in 165 examined popliteal lymph nodes, and one hemangioma occurred in a hepatic lymph node. The hemangiomas were cavernous and benign.

Lymphangiohemangiomas of the mediastinum are exceedingly rare. Clinically they tend to behave like lymphangiomas. We report 3 new cases. All 3 cases showed both lymphatic and vascular components. One case was associated with a left superior vena cava. In both other cases computed tomography with dynamic scans demonstrated the vascular components. Combined lymphatic venous malformation was thus evidenced in the 3 cases and supports that lymphangiohemangiomas are malformative in origin.

A 3-year-old boy was referred because of a painless mass in the left scrotum. On palpation, the mass was discriminated from the testis, epididymis and spermatic cord and showed transillumination. A part of the mass was dark purple in color. Total surgical excision of the mass was performed. The lesion was multicystic (2-15 mm), adherent to the scrotal skin, and easily dissectable from the testicle. Pathological examination revealed lymphangioma as a major component and hemangioma as a minor part. He has been free of recurrent disease for 2 years. This is the 7th case of hemo-lymphangioma of the scrotum in the Japanese literature.

Lymphangioma and venous angioma are a group of pathological entities which have required surgical treatment since years. Extension, localization and poor delimitation of some lesions have resulted in technical difficulties and serious complications. Our group began the sclerosing therapy with an injection of fibrin adhesive and, due to the lack of response in the first patient, a program with Ethibloc as an alternative substance was developed. We present 10 cases, 4 lymphangiomas and 6 venous angiomas. In 50% of our patients one single session of sclerotherapy was made, in 25% two sessions, and in the rest 25% three. From 10 cases, 4 are still on treatment, complete remission in 5 cases, and good evolution in one case (mixed lymphangioma). As a long-term complication, we have noticed fistulization in 3 cases, and expulsion of the sclerosing agent. In our experience, percutaneous sclerosis with Ethibloc should be the first therapeutic alternative.

Benign esophageal masses are rare. The authors present a rare case of bulky pedunculated hemolymphangioma of the esophagus in a two-year-old female. The symptomatology was characterized by acute episodes of dyspnea associated with the protrusion of the mass from the mouth. The mass was removed endoscopically.

A case of haemangiolymphangioma, a rare hybrid vascular tumour not previously reported in the mediastinum. The pathology and surgical management are discussed.

Proteus syndrome (PS) is a congenital disorder manifesting with severe deformities, the salient features being gigantism and vascular tumors. The disorder is poorly understood, and there has been much discrepancy in the terminology regarding the vascular tumors in PS. The purpose of this study was to elucidate the histogenesis of these tumors by correlating microscopic observations with immunohistologic information. The value of immunoperoxidase studies in the pathologic evaluation of PS was also assessed. Fourteen formalin-fixed, paraffin-embedded tissue specimens obtained from vascular tumors of six children with PS were stained with Ulex europaeus agglutinin I (UEA-I) lectin and the following immunohistochemical reagents: anti-factor VIII-related antigen (FVIII-RAg) and anti-CD34. The tumors showed varied proportions of vascular, lipomatous, and fibrous tissue components consistent with vascular hamartomas. The predominant vascular channels of the tumors were morphologically consistent with lymphatic vessels. Immunostaining of the endothelium of these vessels was most consistently positive with UEA-I lectin. Although a color reaction product was present in small vessels and some larger blood vessels, anti-CD34 immunostaining spared the lumens of lymphatic channels. In addition, a striking population of dendritic spindle cells was noted with the anti-CD34 but was unnoticed with the other reagents. We concluded that the vascular tumors of PS are primarily lymphatic hamartomas. The spindle cells noted with anti-CD34 immunostaining may relate to angiogenesis and need further delineation.

Hemangiolymphangioma is a malformation of both lymphatic and blood vessels. We present a case of fetal abdominal hemolymphangioma diagnosed by ultrasound at 27 weeks of gestation. The extensive fetal involvement, and the diagnosis before fetal viability led us to propose medical termination of pregnancy. This represents the second reported case of prenatal diagnosis of this malformation.

A retrospective analysis of the morphology and signal behaviour of T1, proton and T2-weighted spin-echo sequences has been carried out on 21 haemangiomas and 2 lymphangiomas of the peripheral soft tissues which had been examined by MRT. In 11 cases the diagnosis was confirmed histologically and in 12 by angiography. The majority of haemangiomas (19 cases) and both lymphangiomas showed hyperintense signals on T2-weighted spin-echo sequences; 2 lesions did not conform to this behaviour. MRT was a sensitive method for demonstrating vessels with high flow velocities so that it was possible to distinguish high flow haemangiomas by MRT. Apart from one thrombosed haemangioma, all 9 haemangiomas examined with iv Gd-DTPA showed homogeneous contrast uptake except for vessels with high flow velocities. One lymphangioma examined with iv Gd-DTPA was characterised by non-homogeneous contrast uptake.

Vascular neoplasms of the parotid gland are common in early childhood, particularly in females. We reviewed the clinical, histologic, and treatment details of 10 cases of hemangiomas and one case of lymphangioma that involved the parotid gland. Histologically, the cellularity and increased division figures in these lesions should not be interpreted as a sign of a malignant condition. A watchful expectancy for spontaneous regression and preservation of the facial nerve at surgery are advocated.