Superficially invasive transitional cell carcinoma of the bladder associated with distant cutaneous metastases

Cutaneous metastases from transitional cell carcinoma of the bladder are rare and most often associated with a deeply invasive primary tumor. This case report describes a 69-year-old male with previously resected superficially invasive primary transitional cell carcinoma of the bladder who presented with distant cutaneous and central nervous system metastases associated with recurrent bladder cancer. In addition, this case highlights the differential diagnosis of metastatic carcinomas that display a CK7/CK20 positive immunophenotype including transitional cell carcinoma, pancreatic carcinoma, cholangiocarcinoma and rare gastric carcinomas.