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Palpebral hidrocystomas are benign tumors also known as cystic apocrine adenoma, cyst of sweat gland, apocrine retention cyst or cyst of Moll. They originate from eccrine or apocrine sweat glands and often occur on the face and the eyelids. Other atypical locations such as the chest, the shoulders and the foreskin have been reported. Hidrocystoma is a small translucent, shiny cyst. It appears as single or multiple cystic lesion. Their histogenesis is uncertain. Indeed, apocrine hidrocystoma could arise from the residuals of the primitive apocrine glands or of the gland of Moll. The eccrine hidrocystoma could arise from the eccrine glands or the excretory duct of the glands of Moll. Their clinical differentiation is little obvious and diagnosis is based on histological examination. They are characterized by two clinical presentations: isolated hidrocystomas and the associated types. Isolated hidrocystoma is the most common type: hidrocystoma appears as single or multiple cystic lesions and it is not associated with extraocular signs. Apocrine hidrocystomas are solitary in 93% of cases while eccrine hidrocystomas appear most often as multiple lesions. The associated types are more rare and have been only described for the multiple hidrocystomas. If in the majority of cases a treatment based on argon laser is sufficient, more voluminous hidrocystomas require surgical resection. We here report the case of a young patient presenting with translucent nodule in the external canthus of the left eye. Hidrocystoma, molluscum pendulum and syringoma were the suspected diagnoses. Surgical resection was performed as well as histologic examination which confirmed the diagnosis of hidrocystoma.

Background: Hidradenocarcinoma is a rare malignant tumour involving the sweat glands. It classically arises de novo, only rarely resulting from pre-existing hidradenoma. The literature contains few reports of lymph node metastasis in this tumour. We report a case of a patient with hidradenocarcinoma of the heel associated with inguinal node metastases., Patients and Methods: We report the case of a 64-year-old patient with a history of chronic smoking, who in the last two years developed a painless nodule in his right heel, with no prior injury, and which gradually increased in size to become an ulcerated tumour. Physical examination revealed a rounded tumour mass, ulcerated in the centre, and associated with multiple inguinal adenopathies. Histological and immunohistochemical examination was suggestive of hidradenocarcinoma. The patient had undergone extensive local excision with inguinal lymphadenectomy. Histological examination showed infiltration of lymph nodes by the tumour with capsular rupture. Radiotherapy was subsequently given. The outcome was good without recurrence after 34 months of follow-up., Discussion: Hidradenocarcinoma is a rare malignant tumour. Diagnosis is based on histological and immunohistochemical examination. However, hidradenocarcinoma may on occasion be difficult to differentiate from hidradenoma, a benign tumour, hence the interest of complete surgical resection with safety margins even in the absence of cytological malignancy. Local recurrences are common. The occurrence of lymph node metastasis during hidradenocarcinoma has been described only rarely in the literature. Such metastases usually occur after tumour resection. The specific features of our case are the rarity of lymph node metastases in hidradenocarcinoma coupled with the fact that these metastases were discovered upon diagnosis of the primary tumour., (Copyright © 2017. Published by Elsevier Masson SAS.)

Introduction: Malignant eccrine spiradenoma is a rare and aggressive tumor, developed on the epithelium of eccrine sweat glands. Typically, it occurs after malignant transformation of benign eccrine spiradenoma, but sometimes it happens de novo., Observation: We report a case of malignant eccrine spiradenoma in a 62-year-old woman. The patient presented a rapid increase in size of a long-standing tumoral lesion of her forearm. There was no secondary lesion on the chest, abdomen or pelvis at the CT-scanner. Cutaneous biopsy of the lesion was performed and showed a carcinoma with no contact with epidermis. On this biopsy, we could not affirm if the tumor was a metastatic process or a primary tumor of the skin. Histologic examination of the surgical removal of the tumor showed an undifferentiated carcinoma with adjacent nodules of eccrine spiradenoma. Immunohistochemical assessment of Ki67 expression showed a weak expression (5%) in the benign spiradenoma nodules and a high rate expression (80%) in the malignant neoplasm. The final diagnosis was an undifferentiated carcinoma arising from preexisting benign spiradenoma., Discussion: Malignant eccrine spiradenoma is not frequent and is rarely described in the international literature that may lead to diagnostic difficulties., (Copyright © 2016 Elsevier Masson SAS. All rights reserved.)

The eccrine poroma is a rare benign sudoral tumour, which creates a fleshy formation. The diagnosis is made according to the anatomopathological study. The usual site is the sol, but in rare cases, other sites have also been reported. The authors report three cases of eccrine poroma localised in the scalp with literature review.

The vast majority of palpebral tumors are benign and, when complete, straightforward excision is curative. In some cases, laser ablation can be appropriate. These tumors originate from the pilosebaceous adnexa of the skin and are mainly composed of cysts. For carcinomas, the extent of the tumoral expansion must be assessed on pathological examination of a specimen. In case of recurrence, the tumor may extend beyond the clinically visible borders. This is particularly true in the sclerodermiform type of basal cell carcinoma, which invades tissues deeply, in spindle cell carcinoma, which spreads within the thickness of the epidermis or the conjunctival epithelium, and in sebaceous gland carcinoma, which can present in a masquerade fashion.

A cystic cutaneous mass was observed on the lateral canthus of the left eyelid in a 25-year-old woman, 2 years after being operated on for a lesion that had existed in the same area several years before, but the patient could not identify its nature. The present mass appeared as a well-circumscribed bluish cystic lesion. A surgical resection was performed; pathological analysis disclosed a cystic sweat tumor composed of several contiguous cysts. One year of follow-up has revealed no complications.

Eyelid surgery is not always uneventful. Complications (punctal ectropion, retractile scars) can sometimes occur. Argon laser treatment is an interesting alternative technique, particularly in cases with cosmetic indications. The advantages of the procedure, compared to surgery are numerous: magnified view of tissue removal, enhancing complete excision; good hemostasis, avoiding wound sutures and bandage; fast and painless technique; outpatient office procedure with little post-operative care; good acceptance of the technique by most of the patients. The technique and the main indications are described in this paper.

Infiltrating syringomatous adenoma of the nipple is composed of small sweat ducts and solid strands, surrounded by desmoplastic stroma and preferentially develops in the superficial breast tissue and specially in the nipple. This particular and exceptional lesion deserves to be acknowlegded by pathologists concerned with breast pathology since this tumor mimics grade 1 invasive breast ductal carcinoma.

A clinico-pathologic case of a black hidrocystoma of the left eyelid margin is reported in a 45-year-old female patient. Clinically, a black nodule was disclosed after eversion of the superior left lid. A surgical full thickness eyelid focal resection was performed to remove the cyst. Histopathology found a cyst covered with an epithelium with a double layer of cells and filled with a brownish granular content, typical of a black hidrocystoma.

Non-melanomatous malignant skin tumors of the hand are the same as those observed on other parts of the body, but with specific characteristics of frequency, aetiology, site and sometimes misleading clinical features. The author analyses these characteristics in relation to precancerous tumors: solar keratoses, arsenical keratoses, radiation dermatitis, kerato-acanthomas, Bowen's disease and malignant tumors: basal cell, squamous cell and other rarer carcinomas. He then outlines the principles of surgical treatment with reference to anaesthesia, usually local or regional, and resection, whose extent and depth depend on the nature and site of the lesion.

Introduction: We report a new case of eccrine carcinoma with mucinous stroma characterized by its voluminous exophytic growth., Case Report: An 80-year-old patient was hospitalized for a voluminous vegetating tumor localized over the left temporal region and which had developed over the 10 preceding years. Wide exeresis was performed and histology confirmed the diagnosis of eccrine carcinoma. No locoregional recurrence was noted 18 months later., Discussion: Eccrine carcinoma with mucinous stroma, also termed eccrine mucinous adenocarcinoma, is a rare adnexal skin carcinoma usually localized on the face or scalp. Abundant zones of mucine are characteristic dissociating a dermal cell proliferation with ruban architecture. The volume of the tumor in our case was particularly remarkable although outcome was favorable after surgical treatment.

Cystic lesions of the eyelids are not uncommon and are variable in nature. A case report of a 42-year-old male patient is detailed. A bilateral cystic lesion was clearly visible at both medial canthuses. Surgical resection was performed under local anesthesia, followed by histopathological study of the specimens. This revealed that these lesions were hidrocystomas, of probable eccrine origin. As many different cystic lesions may be encountered on the eyelids (dermoid cysts, epidermic cysts, cystic basal cell carcinomas...), routine histopathological study of surgically removed cystic specimens is mandatory to obtain an accurate diagnosis.

Description of three apocrine cystadenomas: two of the face and scalp and one of the glans (urethral meatus and left anterior surface of the navicular fossa) with no bibliographical precedent. From a clinico-histological standpoint the importance of objective data which make possible the clinical diagnosis is stressed allowing light microscope differentiation from eccrine hydrocystoma. The histogenesis is exposed and it appears convenient to name (eccrine or apocrine) cystadenoma the authentic cystic adenoma (among the organoid hamartoma of the cutaneous appendages, while reserving the term (eccrine or apocrine) hydrocystoma for glandular cysts. Due to the esthetic and occasionally functional repercussion, surgical excision is indicated.