Metastasis of squamous cell carcinoma of the bladder to the heart: case report and review of the literature.

A 79-year-old woman with no previous history of genitourinary disease presented to an outside urologist with gross hematuria and irritative voiding symptoms. Cystoscopy revealed a papillary bladder mass thought initially to represent urothelial carcinoma of the bladder with squamous features. The patient presented to our hospital 6 months later with dyspnea and edema. Computed tomography of the chest revealed a cardiac mass, and endomyocardial biopsy revealed metastatic squamous cell carcinoma. A review of the patient's pathology report confirmed the very rare diagnosis of metastatic squamous cell carcinoma of the bladder to the heart.