نتایج جستجو برای: cystic degeneration
تعداد نتایج: 108742 فیلتر نتایج به سال:
Ancient schwannoma is a rare variant of benign peripheral nerve sheath tumor, often morphologically mimicking malignancy. Retroperitoneum is an uncommon location. We describe one case of giant retroperitoneal ancient schwannoma. Literature concerning this variant is also reviewed. A 65 year old male presented with altered bowel habits. Imaging findings revealed a large heterogeneous mass in the...
We describe a previously healthy 48-year-old man who presented with clinical characteristics suggestive of internal carotid artery dissection, confirmed by magnetic resonance imaging. He developed a massive infarction of the left cerebral hemisphere and died after 3 days of transtentorial herniation. Post-mortem examination identified a dissection of the thoracic aorta caused by Erdheim-Gsell c...
INTRODUCTION Cystic adventitial disease of the popliteal artery is a rare cause of non-atheromatous claudication. It usually requires surgery to improve the distance walked by patients. CASE PRESENTATION We report the case of a 44-year-old Caucasian man with unilateral symptomatic popliteal cysts extending to his genicular branches and associated with multilevel stenosis of his anterior tibia...
Parathyroid cysts constitute 0.08-3.41% of all parathyroid masses. Intrathyroidal parathyroid cysts, however, are rare conditions with only a few cases being reported. Most of the parathyroid cysts are found to be nonfunctional and functional cysts are generally thought to be due to cystic degeneration of parathyroid adenomas. A cystic, smooth contoured lesion of 24 × 19 × 16 mm was observed in...
A 50-year-old man, a professional international alpineskiing coach, presented at the Department of Vascular Surgery with a short history of intermittent ischemic muscle pain of the right lower leg. Reversible claudication typically occurred during physical activity and was relieved after a short rest. At the time point of presentation, the subjective limitations, however, were only low. His med...
A 40-year-old man had low back pain and left leg pain for 2 months. MR disclosed a cystic tumor filling the spinal canal. On T2-weighted images (Fig 1A), fluid in the cyst showed a fluid-fluid level. On contrast with gadopentate dimeglumine (Fig 1B), of the cyst wall showed enhancement. At surgery, an intradural cystic mass was found. Fluid in the mass was a combination of two different fluids,...
Nephronophthisis (NPHP), Joubert (JBTS), and Meckel-Gruber (MKS) syndromes are autosomal-recessive ciliopathies presenting with cystic kidneys, retinal degeneration, and cerebellar/neural tube malformation. Whether defects in kidney, retinal, or neural disease primarily involve ciliary, Hedgehog, or cell polarity pathways remains unclear. Using high-confidence proteomics, we identified 850 inte...
A schwannoma is a benign peripheral nerve sheath tumor arising from Schwann cells. Most schwannomas are solid tumors and cystic degeneration and hemorrhage can be seen (1). A benign schwannoma can display degenerative changes, such as hyalinization, hemorrhaging, calcification, and cyst formation. These changes are usually partially visible in the tumors (1-6). Few reports have described a pure...
Objective. To investigate the clinicopathological characteristics of gastrointestinal stromal tumor (GIST) with significant cystic changes and to assess the molecular genetic characteristics. Methods. In a 68-year-old man, a large abdominal tumoral mass was discovered incidentally. Computed tomography (CT) and magnetic resonance imaging (MRI) confirmed the presence of a large cystic lesion with...
Hepatic epithelioid angiomyolipoma (AML) is a rare lesion that is characteristically composed of a predominant or exclusive population of epithelioid cells coexpressing melanocytic and myogenic markers. The cystic variant of epithelioid AML is exceedingly uncommon. In this study, we present the clinicopathological features of a case of hepatic epithelioid AML with remarkable cystic degeneration...
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