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Complex neurocristopathy, a disorder resulting from the aberrant proliferation of tissues derived from neural crest cells, has been previously reported in 2 patients, both involving ophthalmic melanoma and other tumors. One patient had a periorbital neurofibroma, sphenoid wing meningioma, and choroid juxtapapillary meningioma. The other patient had a… (More)
Signet ring cell variant of mucinous adenocarcinoma of the urinary bladder is an exceptionally rare urologic malignancy, generally felt to be resistant to chemotherapy and radiotherapy. We describe a case of this malignancy with unusual sites of metastasis and an unexpectedly good response to treatment.