Benign epithelioid schwannoma is a very rare variant of schwannoma, that can pose a diagnostic challenge. The reported cases were predominantly located in dermal/subcutaneous tissue. Although conventional schwannoma occurring in the posterior mediastinum was common, to our knowledge, no mediastinal benign epithelioid schwannoma was reported in English literature. Herein, we presented a case of ...

Primary epithelioid leiomyosarcoma of uterine cervix (UC) has rarely been reported. A 90-year-old woman presented abnormal uterine bleedings. Colposcopy revealed erosions of cervix, and biopsy was taken. It showed proliferation of atypical spindle and epithelioid cells with hyperchromatic nuclei and prominent nucleoli. Mitotic figures including atypical mitosis were noted. The histological feat...

Epithelioid sarcoma of vulva is extremely rare. Only 20 cases have been reported in the literature so far. Early diagnosis is difficult because of its benign appearance as a painless subcutaneous nodule. Therefore treatment can be delayed, although epithelioid sarcoma requires prompt surgery. We report a case of epithelioid sarcoma that occurred in the left vulva with a brief review of literature.

OBJECTIVE Epithelioid hemangioendothelioma is a rare member of vascular tumors of intermediate malignancy. Recently, presence of t(1;3) translocation and WWTR1/CAMTA1 gene fusion, which enhances CAMTA1 expression, are found to be specific to this tumor. We investigated the CAMTA1 immune expression profile of epithelioid hemangioendothelioma and its potential mimickers using a commercially avail...

INTRODUCTION Perivascular epithelioid cell tumors are mesenchymal tumors composed of histologically and immunohistochemically distinctive perivascular epithelioid cells. This type of tumor is rare but bladder localization is even rarer. CASE PRESENTATION A case of bone metastatic bladder perivascular epithelioid cell tumor in a 65-year-old Caucasian man treated with surgery and chemotherapy i...

epithelioid hemangioendothelioma (ehe) is a rare neoplasm of vascular origin which arises preferentially in soft tissue and bone, and rarely in the liver. its vascular nature is confirmed by positive staining for factor viii-related antigen and other endothelial cell markers (cd31, cd34) in addition to the pathologic characteristics of well-developed basal lamina, pinocytotic vesicles, and, mor...

INTRODUCTION Typical angiomyolipoma (AML) is a benign neoplasm, which consists of a mixture of smooth muscle, fat, abnormal blood vessels, and perivascular epithelioid cells, the latter of which have been described to be present in varying proportions. Recent reports have described renal masses comprised almost entirely of perivascular epithelioid cells and have designated them as “monotypic ep...

Epithelioid and epithelial neoplasms of bone are rare. They include different epithelioid variants of vascular lesions, osteoblastoma, chondroblastoma and most importantly metastatic carcinoma. Up to now, only few cases of epithelioid osteosarcoma were described. In this case the authors report a 53-year-old patient presented with a medical history of chronic shoulder pain for 3 years. Magnetic...

OBJECTIVE Epithelioid angiomyolipomas (AML) of the kidney are malignant tumors with aggressive clinical behavior. METHODS The Authors report on some cases epithelioid AM recently diagnosed at their Institute to highlight the spectrum of clinical presentations. RESULTS In all cases, renal lesions observed at computed tomography were suspicious for renal cell carcinoma (RCC). Histologically, ...

A case of epithelioid sarcoma in the tongue is reported. The patient, a 35 year old woman, presented with a non-ulcerated painful lesion of the tongue. Microscopically, the tumour was characterised by multiple coalescent nodules with central geographic necrosis infiltrating the lingual muscle. The tumour cells were epithelioid with abundant eosinophilic cytoplasm and atypical nuclei. Immunohist...