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Developmental cysts are the most common retrorectal cystic lesions in adults, occurring mostly in middle-aged women. They are classified as epidermoid cysts, dermoid cysts, enteric cysts (tailgut cysts and cystic rectal duplication), and neurenteric cysts according to their origin and histopathologic features. Although developmental cysts are often(More)
OBJECTIVE We retrospectively reviewed five pathologically proven cases of diffuse cavernous hemangioma of the rectosigmoid colon to define the MR imaging features of this entity. CONCLUSION Diffuse cavernous hemangioma of the rectosigmoid colon is revealed as rectosigmoid wall thickening with high signal intensity on T2-weighted MR images. Such wall(More)
Diffuse cavernous hemangioma of the rectosigmoid colon (DCHR) is an uncommon disease that affects mainly young adults. As the main symptom is non-specific chronic rectal bleeding, the clinical diagnosis is difficult and often delayed. In this essay, we illustrate the imaging features of DCHR, including plain radiograph, barium enema, CT and MR study, and(More)
Filter placement within the inferior vena cava is performed to prevent pulmonary embolism in patients with contraindications or failure of anticoagulant therapy. Several complications of vena cava filters have been described. However, mechanical complications related to IVC filters may not be of any clinical significance. The purpose of this pictorial essay(More)
The purpose of this article is to describe, with 5 clinical cases, the physiological communications between the inner ear and the subarachnoid spaces (SAS) and present the imaging features with regard to. Therefore we briefly illustrate abnormal communications between SAS and perilymphatic fluids in certain cochlear and internal acoustic meatus (IAM)(More)
OBJECTIVE We used MR angiography to examine and follow up the changes of dissecting aneurysms of the extracranial internal carotid artery (ICA). MATERIALS AND METHODS We retrospectively reviewed the records of 101 consecutive patients with dissecting aneurysms of the extracranial ICA. Twenty patients with 26 spontaneous dissecting aneurysms were followed(More)
OBJECTIVE To evaluate the clinical course of aneurysms developed during extracranial internal carotid artery (ICA) dissection. BACKGROUND Aneurysms developed during extracranial ICA dissection are detected angiographically in 5 to 40% of cervical artery dissections. The clinical and radiologic course of these aneurysms is not known, and it is not known(More)