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Objective: Several studies in the literature have used contrast-enhanced magnetic resonance imaging to investigate arachnoid granulations protruding into the cranial dural sinuses. The current study aimed to investigate the protrusion of arachnoid granulations into the superior sagittal sinus, transverse sinus, straight sinus, and confluence of sinuses and determine the frequency of brain herniation into giant arachnoid granulations using contrast-enhanced 3-dimensional T1-weighted magnetic resonance imaging. Materials and Methods: Images of 550 patients with intra-sinus arachnoid granulations who underwent contrast-enhanced 3-dimensional T1-weighted thin-slice magnetic resonance imaging were retrospectively re-evaluated. Only 300 patients with at least 1 intra-sinus arachnoid granulation were included in the study. The protrusion of arachnoid granulations into superior sagittal sinus, transverse sinus, straight sinus, and confluence of sinuses was investigated. In addition, large arachnoid granulations and brain herniations into arachnoid granulations were also noted. Results: A total of 889 focal filling defects of arachnoid granulations, at least 1 in the dural sinus, were detected. Of the filling defects of arachnoid granulations, 183 were in the right transverse sinus, 222 in the left transverse sinus, 265 in superior sagittal sinus, 185 in straight sinus, and 34 in confluence of sinuses. Brain herniation into arachnoid granulations was detected in 8 (2.7%) of the patients included in the study. All the filling defects detected in the dural sinuses on post-contrast 3-dimensional T1-weighted images were isointense with cerebrospinal fluid and had round, oval, or lobulated contours. A positive weak correlation was found between patient age and the size and number of arachnoid granulations (r = 0.181, P < .01 and r = 0.207, P < .001, respectively). It was observed that the size and number of arachnoid granulations increased as the age of the patients increased. Conclusions: The distribution, shape, number, and size of intra-sinus arachnoid granulations can vary considerably. Brain herniation into arachnoid granulation can also be seen. Three-dimensional cranial magnetic resonance imaging sequences can be safely used in the evaluation of arachnoid granulations. [ABSTRACT FROM AUTHOR]

In this study, we present the ultrasound imaging features of lymph nodes arising in the regional lymph node chain after the first or second dose of the Pfizer-BioNTech COVID-19 vaccine. Ipsilateral lymphadenopathy adjacent to the vaccine injection site is an extremely rare but expected adverse reaction following COVID-19 vaccination. Although axillary lymphadenopathy is more common, cases of supraclavicular lymphadenopathy have also been reported after widespread vaccination against COVID-19. Ultrasonography examinations were performed on seven patients with no previous pathological conditions, who presented to our radiology department after receiving the Pfizer-BioNTech COVID-19 vaccine. Bilateral axillary, supraclavicular and subclavicular lymph node stations were explored. These patients typically present with enlarged hypoechoic lymph nodes with the loss of fatty hilum, asymmetric or diffuse cortical thickening, and increased hilar and cortical vascularization on the color doppler ultrasonography of the ipsilateral axillary and supraclavicular regions. Radiologists and clinicians should be aware of the ultrasonographic features of these lymph nodes and should inform the patient that these lymph nodes are often a self-limiting process. Thus, unnecessary axillary lymph node biopsies should be avoided, and patients should be treated conservatively. [ABSTRACT FROM AUTHOR]

Objective: The sphenoid sinus is a paranasal sinus that is extremely difficult to reach, being located deep in the skull and surrounded by a large number of vital neural and vascular structures. Additional radiological evaluation of the sphenoid sinus and related neurovascular structures is essential before surgery. This study aimed to analyze the anatomical variations associated with the neurovascular structures in and around the sphenoid sinus using multislice computed tomography (CT) and contribute to the literature by comparing the obtained data with previous studies. Material and Method: A total of 100 patients (50 females, 50 males) who underwent paranasal sinus CT for various rhinologic diseases were included in the study. Sphenoid sinus variations were evaluated as bone tissue anomalies and soft tissue pathologies on CT. Results: In this study, variations in the neurovascular borders of the sphenoid sinus were the most common findings. The variations related to the Vidian canal were most frequent with an incidence of approximately 73%, followed by those related to the optic nerve 55%, maxillary nerve 53%, and internal carotid artery 52%. Pneumatization of the pterygoid plate was observed in 59% of cases, pneumatization of the anterior clinoid process in 41%, and that of the greater wing of the sphenoid in 13%. Furthermore, 15% of the patients had onodi cells, 46% had multiple septations, 20% had mucosal thickening, 0.4% had polyps, and 0.3% had retention cysts. Conclusion: The structure of the sphenoid sinus is highly variable, and paranasal sinus CT is important in determining anatomic variations before sinonasal and transsphenoidal surgery and predicting possible complications during surgery. In this study, the variations of the sphenoid sinus were found at a higher rate compared to previous studies, which may be due to the differences in ethnic groups, CT imaging technique, or anatomical evaluation criteria. [ABSTRACT FROM AUTHOR]

Objective: The position of the patella relative to the femur is critical in the evaluation of patellofemoral joint diseases. Blumensaat defined a line to evaluate patellofemoral congruence, which is still used clinically. This study aimed to evaluate age- and gender-related changes in the blumensaat line (BL). Methods: Images of 229 patients, who underwent standard lateral knee radiography at 30° flexion, were retrospectively evaluated. The relationship between BL and interior pole of the patella was examined, and the variability of the measurements according to gender and age groups was investigated using statistical methods. Results: Two hundred and twenty-nine patients (128 men; 101 women) were included in the study. The mean age was 41.96±13.41 years (39.63±13 years for men and 44.90±12.2 years for women). BL passed through the lower pole of the patella in only two (0.9%) of the 229 patients. No statistically significant difference was found in the BL measurement of men and women (p>0.05). There was also no statistically significant relationship between age and these distance values (r=-0.112; p>0.05). Conclusion: It was concluded that there was no difference between genders and different age groups in terms of BL measurements. [ABSTRACT FROM AUTHOR]

Aicardi's syndrome is a severe congenital syndrome characterized by infantile spasm, corpus callosum agenesis, ocular abnormalities, especially chorioretinal lacuna, and motor mental retardation. The diagnosis of the disease is made by clinical findings. Electroencephalography, magnetic resonance imaging findings and ophthalmologic examination are helpful in the diagnosis. The first problem in patients with Aicardi syndrome is seizure and motormental retardation. In this study, two siblings who were born as a result of consanguineous marriages and who were diagnosed Aicardi syndrome with mental-motor retardation, ocular abnormalities, corpus callosum hypoplasia and interventricular cyst were presented. [ABSTRACT FROM AUTHOR]

Patients with traumatic intracranial subarachnoid hemorrhage (SAH) rarely develop spinal subarachnoid hemorrhage (SSAH) without direct spinal injury. We present the case of a 76-year-old male patient with traumatic intracranial SAH and subdural hematoma, back pain and weakness in the both lower limbs radiating to the legs three days after the trauma. After worsening of pain and numbness, the patient underwent a lumbar magnetic resonance imaging 7 days after the trauma, in which blood was seen in the spinal canal in the lumbosacral region. The bleeding was considered SSAH because of the liquid level. The patient underwent conservative treatment because the patient was found to be at high cardiac risk and the neurological deficit was mild. In patients with traumatic intracranial hemorrhage and delayed pain or neurological deficits, SSAH should be suspected in the first period of trauma. [ABSTRACT FROM AUTHOR]

Cervical ectopic thymus (CET) is one of the rare causes of cervical masses in childhood. These lesions manifest with the same echo and signal intensity as the natural thymus on ultrasonography (US) and magnetic resonance imaging (MRI), respectively. Therefore, both US and MRI are appropriate imaging methods for the diagnosis of CET. We evaluated the US and MRI features of the CET patient who presented to our hospital due to bilateral cervical swelling. In particular, based on the typical US appearance of thymic tissue, we believe that we can safely prevent the need for biopsy to detect that a discovered lesion that has ectopic thymus tissue. In this article, we aimed to emphasize the importance of imaging methods in the diagnosis of CET in a pediatric patient with a complaint of neck mass. [ABSTRACT FROM AUTHOR]

Ligamentum flavum cyst, a cystic lesion adjacent to the lumbar spine, is a rare cause of neurological symptoms and signs. It is usually seen in older ages. It is more common in the lower lumbar region than in the cervical region. Here, we aimed to discuss ligamentum flavum cysts in two cases. In a 54-year-old male, a lumbar magnetic resonance imaging showed a ligamentum flavum cyst located at the right posterolateral of the spinal canal at the L3-L4 level, and spinal canal stenosis at this level. After the surgical removal of the cyst, the patient's symptoms entirely resolved. A 43-year-old female patient had a ligamentum flavum cyst on the left posterolateral of the spinal at L4-L5 level with thecal sac compression. Conservative treatment was planned, and the symptoms regressed during follow-up. [ABSTRACT FROM AUTHOR]

Aim: Comparison of the diagnostic value of ultrasonography (US) and magnetic resonance imaging (MRI) in the diagnosis of rotator cuff and biceps tendon pathologies. Material and methods: Shoulder US an MRI were performed in patients suffering from shoulder pain. The results of the two methods were retrospectively evaluated in a total of 105 cases. Magnetic resonance imaging findins were accepted as a reference. Results: In the biceps tendon, ultrasonography served as a method for correct diagnosis in 7 of the 8 cases with dislocation, in 1 of 3 cases with partial rupture, and i all 4 cases with full thickness rupture. In biceps tendon patholo- gies, the sensitivity nad the specifity of US were respectively 80% and 978%. And for supraspinatus tendon pathologies; 24 of 26 full thickness ruptures (92.3% sensitivity, 98.8% specifity), 30 of 37 partial ruptures (81% sensitivity, 95.6% specifity), 30 of 37 tendnosis' (83.3% sensitivity, 95.6% speifity) were diagnosed correctly with US. Conslusion: As a result, US is a reliable and especially reproducible method for evaluation and diagnosing of patients with shoulder pain. Furthermore, its diagnostic value is low in partial rotator cuff ruptures and in the partial ruptures of the intracapsular biceps tendon [ABSTRACT FROM AUTHOR]

Hypertrophic olivary degeneration (HOD) is a rare form of transsynaptic degeneration and is the only type which occurs with hypertrophy rather than atrophy. It develops due to pathologies affecting conduction in the dentato-rubro-olivary pathway. Despite being the classic HOD-related findings, palatal tremor, Holmes tremor, nystagmus, and cerebellar ataxia are not usually present in patients. Most cases are asymptomatic, and HOD is incidentally detected on magnetic resonance imaging scans. This paper reports the case and imaging results of a 60-year-old male patient that presented with findings of acute infarction at the posterior aspect of the mesencephalon and pons and superior cerebellar peduncle following head trauma and developed right contralateral HOD. [ABSTRACT FROM AUTHOR]

Renal cell carcinoma is the most common primary malignant tumor of renal parenchyma. RCC most commonly spreads to lung, liver, bone, brain, lymph nodes and controlateral kidney. Bone metastases are seen %20-35 of RCC cases. Main reason of morbidity in RCC patients are pain, decrease of mobility and pathological fractures cause by bone metastases. In solitary lesions best treatment is removal of lesion by surgery. Transcatheter embolisation used for limiting intraoperatif bleeding, both on primary tumor before nephrectomy and metastatic bone lesions. In this case we aim to present a case which underwent surgery for RCC which diagnosed with bone metastas in diafizer part of humerus 4 years later and transcatheher embolisation performed with liteature sources and radiological findings. [ABSTRACT FROM AUTHOR]

Aim: The aim was to evaluate the efficacy of ultrasound (USG) in the identification of free fluid and organ injury signs in abdominal trauma. Material and Methods: The radiological findings, follow-up and treatment results of 172 patients presenting to the emergency departments with blunt or penetrating abdominal trauma that had undergone ultrasonography and computed tomography (CT) were retrospectively evaluated. The presence of free fluid and organ injury findings were evaluated in all abdominal quadrants. USG findings were compared with CT ± treatment (conservative/surgical) results. Liver, spleen, kidney injuries were evaluated in subgroups. Results: Of the 172 patients included in the study, 66 had free abdominal fluid and 69 had organ injury. For free fluid in the abdomen, the sensitivity, specificity and accuracy of USG was 83.3%, 88.6% and 86.6%, respectively. There was a significant correlation between abdominal organ injury and free fluid detection with USG (p=0.004). When abdominal free fluid ± organ injury were evaluated together, the sensitivity, spesificity and accuracy of USG was 82.6%, 88.3% and 86%, respectively. In the detection of organ injury the sensitivity, specificity and accuracy of USG was 24.6%, 98% and 68.6%, respectively. Conclusion: The sensitivity and spesificity of USG is higher when abdominal organ injury is accompanied by free fluid. [ABSTRACT FROM AUTHOR]

Objective: Unenhanced computed tomography is a rapid, high sensitivie technique for urinary stone determination. In this study, we present alternative causes of flank pain and frequency and charasteritics of incidental findings detected on MDCT. Material And Method: Unenhanced CT scans of 719 patients' abdomen were obtained with 64-MDCT for suspected urolithiasis. The images were analysed retrospectively. Urinary stones and their effects to urinary organs were evaluated, but also alternative and incidental findings were noted. Results: We detected 56 major, 162 moderate and 320 minor findings. The most common findings were renal cortical cysts in 70 (9,7%) patients. A large part of major findings were malignancies. We determined 6(0,8%) lomber disc hernia, 12(1,7%) spondilolisthesis, 8(1,1%) compression fracture with the help of sagittal and coronal reformatted images. Conclusion: Our major findings rate was similar to literature. There were not much vertebral findings in similar studies. We suggest that coronal and sagittal reformatted images contribute to detect these skeletal findings. Although stone disease is the most common cause of flank pain, we have to be aware of alternative diseases that can create similar flank pain and incidental findings that may need rapid treatment. [ABSTRACT FROM AUTHOR]