Epithelioid hemangioendotheliomas are rare vascular tumors, often arising from medium to large veins in the extremities. Symptoms of these tumors vary depending upon location. Rarely, tumors may arise in chest and involve large vessels in the mediastinum. We present a case of a 17-year-old male presenting with compressive symptoms of the left upper extremity who was found to have a large epithe...

We report the case of a rare solitary small nodular form of malignant hepatic epithelioid hemangioendothelioma in a patient followed by computed tomography and gadoxetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging with histological analysis. This case showed early peripheral septal and nodular enhancement and delayed centripetal enhancing pattern with capsular retraction, mimicking p...

Epithelioid hemangioendothelioma was coined by Enzinger and Weiss in 1880 to define an intermediate group of vascular neoplasm.1 The tumor is composed of epithelioid or histiocytoid endothelial cells. It commonly occurs in lungs, liver, bone, and presents as a soft tissue mass. Intracranial occurrences are very rare and cavernous sinus is an unusual site. To the best of our knowledge, we found ...

Epithelioid hemangioendothelioma (EHE) is a rare tumor of intermediate malignancy. We report a case of intracranial and intraorbitar EHE. A 3-year-old girl presented with a 3-month history of progressive left exophthalmia. Neuroradiologic imaging (CT scan and MRI) showed an intraorbitar process with an intense enhancement extending to temporal fossa, ethmoidal bone, nasal fossa, maxillary sinus...

OBJECTIVES To pathologically distinguish mesothelioma from lung carcinoma, particularly adenocarcinoma. METHODS We conducted immunohistochemical analyses on clinical specimens, including 26 cases of mesothelioma, 28 cases of lung adenocarcinoma, and 33 cases of lung squamous cell carcinoma. RESULTS We found that CD90 expression was useful in making a differential diagnosis between epithelio...

The morphologic distinction of epithelioid mesothelioma from a reactive mesothelial proliferation can be difficult. Recent studies have demonstrated that serum osteopontin levels are increased in patients with mesotheliomas. We sought to determine if osteopontin expression is diagnostically helpful in distinguishing epithelioid mesothelioma from reactive mesothelial proliferations. We studied 7...

Epithelioid angiomyolipoma (EAML) of the kidney is an uncommon neoplasm with malignant potential. It can occur sporadically or be associated tuberous sclerosis. EAML a monotypic variant (AML), which classified as perivascular epithelioid cell tumor. Due to its nature and paucity fat components, unlike classic AML, has abundant adipose tissue characteristic features on CT scans, it difficult dis...