Isolated cysticercal infestation of extraocular muscles: CT and MR findings.
نویسندگان
چکیده
PURPOSE We sought to document the appearance of isolated cysticercal infestation of single extraocular muscles on MR and CT studies, and to compare these findings with results of histopathologic examination. METHODS Six MR and three CT examinations of the orbits of six patients were reviewed. Histopathologic confirmation of the diagnosis was available in three patients, and response to specific medical therapy was available in one. In all, the imaging findings were considered highly suggestive of cysticercal infestation. RESULTS Typically, the affected extraocular muscle showed fusiform enlargement of its belly and contained a well-defined, spherical cyst with a nodule attached to its wall. The mural nodule was identified in all six cases with varying degrees of visibility. It was best seen on the CT examinations and in all cases in which contrast material had been administered. The nodule and the enlarged muscle showed intense enhancement on the contrast-enhanced studies. Imaging studies of the brain showed no evidence of cerebral cysticerci in any of the patients. CONCLUSION The MR and CT appearance of isolated infestation of single extraocular muscles by the larva of the pork tapeworm Taenia solium is quite characteristic and often diagnostic of this condition.
منابع مشابه
CT in the diagnosis of isolated cysticercal infestation of extraocular muscle.
AIM To evaluate the use of computed tomography (CT) and ultrasound (US) to diagnose orbital cysticercosis, and present the diagnostic features. METHOD US and CT were used to evaluate patients with proptosis. Four patients were diagnosed as having orbital myocysticercosis and treated with oral albendazole and corticosteroid. Follow-up was undertaken with US and CT. RESULT US features were co...
متن کاملNormal contrast enhancement of extraocular muscles: fat-suppressed MR findings.
PURPOSE To evaluate contrast enhancement of normal extraocular muscles in the orbit. METHODS Noncontrast and contrast-enhanced T1-weighted images of the orbit were acquired using a fat-suppression MR technique in eight patients with no orbital disease. Contrast enhancement of 64 extraocular muscles was evaluated and compared with that of 16 temporal muscles. RESULTS Compared with temporal m...
متن کاملSystemic sarcoidosis with bilateral orbital involvement: MR findings.
A 43-year-old woman with diplopia had a disconjugate gaze on physical examination. MR images revealed enlarged, abnormally enhancing extraocular muscles and lacrimal glands bilaterally. Biopsy results were consistent with sarcoidosis. Chest radiographs and CT scans were normal. Clinical and MR findings improved after appropriate medical therapy.
متن کاملOphthalmoplegia in carotid cavernous sinus fistula.
The aetiology of ophthalmoplegia in 15 patients with carotid-cavernous sinus fistula is discussed, and the clinical findings are correlated with angiographic and orbital CT appearances. After closure of the fistula the majority of patients with generalised ophthalmoplegia recovered full ocular movements rapidly, while patients with an isolated abduction weakness required much longer to return t...
متن کاملFocal orbital amyloidosis presenting as rectus muscle enlargement: CT and MR findings.
We report a case of focal orbital amyloidosis involving rectus muscles, which is an extremely rare clinical condition. CT scans showed rectus muscle enlargement with punctate calcifications. Heterogeneous hypointensity was present on T2-weighted MR images, and homogeneous enhancement was seen on fat-saturated contrast-enhanced images of the muscles. These imaging findings seem to be suggestive ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- AJNR. American journal of neuroradiology
دوره 19 1 شماره
صفحات -
تاریخ انتشار 1998