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Diagnostics Histology, Training and education

Case of the Month

A 51-year-old man presented with a two-month history of gross hematuria without any other symptoms. Ureteroscopy showed a 1.5 cm polypoid mass that was completely excised and sent for histopathologic examination.

What is the diagnosis?

a. Urothelial papilloma
b. Inflammatory polyp
c. Inverted papilloma
d. Fibroepithelial polyp
e. Florid cystitis cystica/glandularis

Click here to register your guess.

We will reveal the answer next month.

Do you have an interesting case that you would like us to feature? Email it to edit@thepathologist.com.

A. Multiple endocrine neoplasia type I

This is a pancreatic neuroendocrine tumor, a neoplasm found in approximately 60 percent of patients with multiple endocrine neoplasia type I (MEN I). Such tumors also occur in 5–15 percent of patients with von Hippel-Lindau syndrome and occasionally in patients with neurofibromatosis type I. They are not a feature of MEN II.

Submitted by Ivan Damjanov, The University of Kansas School of Medicine, Kansas City, USA.

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