Tumors have also been reported in areas not exposed to sun, such as the nasal cavity, buccal mucosa, gingiva, hard palate, and postauricular skin. About 3% of patients with MCC have tumors at several sites. Approximately 11%-15% of patients present with clinically positive nodes. About 75%-83% of patients eventually develop regional nodal and distant metastases during their illness.
For more on the presentation of MCCs, read here.
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Cite this: Elwyn C. Cabebe. Fast Five Quiz: How Much Do You Know About Merkel Cell Carcinoma? - Medscape - May 31, 2017.