[Squamous cell lesions of the urinary bladder]

Rare periorbital, pseudocystic metastasis of squamous cell carcinoma of the bladder: Case report and review of the literature

We present the case of a man in his fifties with a history of bladder carcinoma who presented with a large periorbital cystic lesion that was found to be a metastasis. Bladder carcinomas are a very rare cause of peri-/orbital metastasis. The primary tumor in this case predominately showed squamous cell differentiation and small areas of adenoid differentiation. To our knowledge only one previous case of orbital metastasis from squamous cell carcinoma of the bladder has been reported. Cyst formation in bladder cancer metastasis has not been reported and is very rare for orbital metastases in general. The pathogenesis of metastatic cyst development is not fully understood and may vary from case to case. A biopsy of an atypical cyst is indicated.