Rare Location of a Dermoid Cyst in the Parotid Gland: A Case Report.

Dermoid cyst of the parotid gland is a lesion composed of benign tissues of ectodermal and mesodermal origin. Although a dermoid cyst can be encountered across nearly all sites of the body, its location in the head and neck area is quite uncommon and even more unusual inside the parotid gland. We present a case of a patient with gradually enlarging tumour in her right parotid gland who underwent surgical removal of the tumour histologically corresponding to a dermoid cyst.

Perivascular Epithelioid Cell Tumor (PEComa) of the Uterine Cervix: A Case Report of a 43-Yr-Old Woman With Abnormal Uterine Bleeding Treated With Hysterectomy.

Perivascular epithelioid cell tumor (PEComas) are a group of ubiquitous neoplasms described in different organs that share distinctive morphologic, immunohistochemical, ultrastructural, and genetic features. They have been reported in several organs such as the uterus, lung, kidney, liver, small and large bowel, and prostate. To the best of our knowledge, only 8 cervical PEComa cases have been described. We report the case of a 43-yr-old woman who presented with abnormal uterine bleeding. Clinical diagnosis of a malignant cervical lesion followed an excision, histopathologically evaluated as PEComa. The hysterectomy specimen confirmed the diagnosis by strong HMB-45 positivity, weak S100 positivity, and focal, moderate cytoplasmic TTF-1 positivity, and negative melan A, SMA, desmin, vimentin, cytokeratins, CD1a and other markers. The patient was negative for tuberous sclerosis complex, did not receive additional therapy, and 3 yr later is disease free. Cervical PEComas are very rare tumors but have to be considered in the differential diagnosis of cervical lesions exhibiting unusual cytologic and immunohistochemical characteristics.