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...

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...

We present a case of 48-year-old male with a nine months history of right inferior thoracic (T10-T12) paravertebral mass, which became painful after a back trauma; dyspnea and hemoptysis were associated. The preoperative native and with contrast substance CT revealed a tumor mass extended from the right paravertebral muscles to the diaphragmatic right pillar muscle, invading the postero-basal p...

Malignant neoplasms very rarely metastasize to the mammary gland, the incidence of which is reported as 0.5-2%. Clear cell sarcoma is a rare neoplasm, accounting for approximately 1% of all soft tissue tumors, which commonly occurs in the distal extremities of young adults aged approximately 20 to 40 years. So it is also called malignant melanoma of soft parts because it frequently produces mel...

Fibrosarcoma (FS) is a malignant mesenchymal neoplasm of the fibroblasts that rarely affects the oral cavity. Two cases of primary FS of the jaws with intraosseous growth (2 men, aged 53 and 71 years) are described. Microscopically, in one case the tumor showed an intense proliferation of spindle-shaped cells, varying little in size and shape and arranged in parallel bands, partly crossing each...

Although a few cases of sinonasal carcinoma with focal sarcomatous differentiation have been reported, pure sarcomatoid carcinoma has not been reported in the English literature. Imaging studies and gross inspection in a 60-year-old man with left-sided face pain revealed a mass in the left maxillary sinus and nasal cavity. A large incisional biopsy specimen from the nasal cavity revealed prolif...

UNLABELLED Perivascular epithelioid cells (PECs) are constantly present in a group of tumors called PEComas, including angiomyolipoma (AML), clear-cell "sugar" tumor (CCST) of the lung and extrapulmonary sites, lymphangioleiomyomatosis, clear-cell myomelanocytic tumor of the falciform ligament/ligamentum teres and rare clear-cell tumors of other anatomic sites. PECs have distinctive morphologic...

AIMS To report one case of malignant perivascular epithelioid cell tumor (PEComa) of the kidney with rare pulmonary and ileum metastases and analyze its clinicopathological features. METHODS We analyzed the clinicopathological features of one case of malignant PEComa of the kidney with pulmonary and ileum metastases. Immunohistochemistry staining was performed. RESULTS The patient was a 48-...

A previously healthy 49-year-old woman presented with a 2-month history of unintentional weight loss, early satiety, nausea, and vomiting. Whole-body computerized tomography scan revealed hepatosplenomegaly with enhancing lesions in the liver, spleen, lumbar vertebrae, and right iliac bone. A liver biopsy sample was initially interpreted as a hemangioma. Complete blood count revealed marked ane...

Adrenocortical adenoma is a benign neoplasm derived from cells of the adrenal cortex. The myxoid variant of this tumor is extremely rare. To our knowledge, only 23 cases of myxoid adrenocortical adenoma have been reported so far and 19 of them mentioned the pseudoglandular pattern. We reported a new case of 56-year-old Chinese female patient whose left adrenal gland was shown a neoplastic lesio...