TY - JOUR T1 - Primary choriocarcinoma of the bladder evolving from a transitional cell carcinoma. JF - Journal of Clinical Pathology JO - J Clin Pathol SP - 503 LP - 505 DO - 10.1136/jcp.37.5.503 VL - 37 IS - 5 AU - P M Dennis AU - A G Turner Y1 - 1984/05/01 UR - http://jcp.bmj.com/content/37/5/503.abstract N2 - A 67 year old man presented with haematuria, which on investigation was shown to be derived from a bladder tumour. The tumour initially was a typical transitional cell carcinoma except for rare trophoblastic cells. Over the next year and a half it gradually evolved into a choriocarcinoma. Postmortem examination confirmed that this was a primary choriocarcinoma of the bladder with no other sites of derivation shown. ER -