We present a very rare case of malignant transformation of a benign mature cystic teratoma. The pathology report revealed malignant transformation of both the epithelial and sarcomatous elements of a benign dermoid cyst. To the best of our knowledge, this appears to be the third case of a malignant fibrous histiocytoma and a squamous cell carcinoma developing from a mature cystic teratoma. Mali...

The present study was performed to determine the incidence and predictive factors of benign renal lesions in Korean patients undergoing nephrectomy for presumed renal cell carcinoma on preoperative imaging. We analyzed the pathologic reports and medical records of 1,598 eligible patients with unilateral, nonmetastatic, and nonfamilial renal masses. Of the 1,598 renal masses, 114 (7.1%) were ben...

Ovarian adenofibroma is a rare benign tumour originating from the germinal lining and stroma of the ovary. We describe here the case of a 36-year-old woman with an ovarian mucinous cystadenofibroma that was diagnosed as a benign cystic mass of the ovary before surgery. The tumour was a cystic lesion composed of 2 regions: one filled with mucinous fluid and the other with yellowish solid compone...

Mesotheliomas usually arise from the pleura and are malignant. We report an unusual case of benign peritoneal mesothelioma presenting in a 59-year-old woman. The disease resulted in bilateral hydronephrosis, colovesical fistula formation, recurrent small bowel obstruction and chronic abdominal pain. To date only a handful of cases have been reported and to the best of our knowledge, none has be...

Introduction Papillary thyroid carcinoma (PTC) constitutes 75-85% of all thyroid cancers. PTC usually presents as a subtle, commonly slow-growing, painless thyroid mass or a solitary nodule in the neck. This presentation of a cystic neck lump, without the presence of a thyroid nodule, may imitate the course of a benign disease, thus delaying diagnosis and proper treatment. Case Report Three c...

a case of papillary mesothelioma peritoneum in a 30 year old man is reported and the question of mesothelioma discussed