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The American Society of Dermatopathology
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Interactive Case Study - June 2016
Painless pink nodule on a thigh of a 94-year-old man
Narina Grove, MD, MA; Nils Lambrecht, MD
Question 1:
A 94-year-old man with history of celiac disease, schizophrenia and adenocarcinoma of prostate (22 years ago) presented to a dermatology clinic with a growing painless 1.5 cm pink nodule on left anterior thigh which had been present for unknown period of time. He was status-post radical prostatectomy and radiation with suprapubic catheter for 6 years, which was changed monthly during this time, and end colostomy due to large bowel obstruction for 3 years. Biopsy was performed.
Click this image to view the virtual slide.
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What is the best diagnosis?
A.
Merkel cell carcinoma
B.
Metastatic transitional cell carcinoma
C.
Sebaceous carcinoma
D.
Metastatic adenocarcinoma of prostate
E.
Malignant melanoma