Internal medicine
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Review Case Reports Multicenter Study
Clinical features of 10 patients with IgG4-related retroperitoneal fibrosis.
To elucidate the clinical characteristics of IgG4-related retroperitoneal fibrosis (RF). ⋯ IgG4-related RF has several clinical characteristic features. Our diagnostic criteria may be helpful in obtaining a correct diagnosis.
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Review Case Reports
A resected perivascular epithelioid cell tumor (PEComa) of the pancreas diagnosed using endoscopic ultrasound-guided fine-needle aspiration.
Primary perivascular epithelioid cell tumors (PEComas) of the pancreas are extremely rare. We herein report our experience with a patient who had a primary PEComa of the pancreas that was diagnosed by the preoperative histopathological examination of a biopsy specimen obtained by endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA). The patient was a 43-year-old woman whose chief complaint was abdominal pain. ⋯ The tumor cells proliferated in a sheet-like fashion and stained positive for the melanoma-associated antigen HMB-45. A PEComa was thus diagnosed. If an adequate tumor specimen can be obtained using EUS-FNA, immunostaining may facilitate the diagnosis of extremely rare diseases and therefore assist in deciding the treatment policy.
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Review Case Reports
Hepatic perivascular epithelioid cell tumor: a case report and review of the literature.
A perivascular epithelioid cell tumor (PEComa) is a rare type of mesenchymal tumor. Cases that arise from the liver are extremely rare. We report a case of a 41-years-old woman suffering from a hepatic PEComa with an emphasis on its imaging findings, primarily those of contrast-enhanced computer tomography (CECT) and sonography. We also conducted a literature review to evaluate imaging findings that could provide some information for preoperative diagnosis.