RARE COLLISION TUMORS IN THE PROSTATE
Dr. Spasimir T. Shopov*
ABSTRACT
Collision tumors are rare, consisting of two or more distinct neoplasms that develop adjacent to one another and coexist with no or minimal intermingling between them. Their diagnosis is often incidental and their behavior remains widely unknown. Several theories have been proposed regarding their pathogenesis. I report a 75-year-old man with a mictional disturbances for several years. Ultrasound examination of organs in a small pelvis: enlarged prostate, and stagnant urine in the bladder. Paraclinical: PSA 19,7 ng/ml. Histologically: a collision between two tumors in the prostate.
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