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Journal of Case Reports
Sarcomatoid Carcinoma of Prostate: A Rare Entity
PHILLIPS Adekoyejo Abiodun1, DARAMOLA Adetola1, ANUNOBI Charles1, TIJANI Kehinde Habbeb2, MOMOH Martins1
Department of Anatomical and Molecular Pathology1 & Department of Surgery2, Lagos University Teaching Hospital, Idi-Araba, Lagos. PMB 12003, Lagos, Nigeria.
Corresponding Author:
Dr. DARAMOLA Adetola
Email: aodaramola@unilag.edu.ng
Received: 10-SEP-201 Accepted: 08-JAN-2014 Published Online: 25-JAN-2014
DOI: http://dx.doi.org/10.17659/01.2014.0009
Abstract
Sarcomatoid carcinoma is an aggressive, rare malignancy of the prostate with less than 100 reported cases worldwide. A 60 year old male presented in our surgical outpatient department, with symptoms of bladder outlet obstruction and a prostate specific antigenof 0.94 ng/L. A clinical assessment of benign prostatic hypertrophy was made and prostatectomy was done. The specimen received in our laboratory consisted of two firm, grayish white nodular masses with variegated haemorrhagic surfaces. Histology revealed a biphasic tumor with a predominately spindle cell component (80%) as well as clusters and nests of small undifferentiated cells. Also seen were nests of a well differentiated keratinizing squamous cell carcinoma which were EMA positive. A few of the small undifferentiated cells and stromal cells were also EMA positive but negative for desmin. About 40% of cells in stained sections were positive for Ki67. A diagnosis of sarcomatoid carcinoma of the prostate with a Gleason score of 10 was made. 
Keywords : Prostatic hyperplasia, Prostate-Specific antigen, Carcinoma, Squamous cell, Desmin.
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