Mucinose papuleuse atypique avec aspect histologique initial de granulome annulaire

Papular mucinosis is a rare disease and its physiopathology remains to be elucidated. The diagnostic criteria are sometimes inadequate, and its classification includes both atypical and intermediate forms. Our case belongs to the latter class because of its extensive and unusual topography, and its association with a monoclonal gammopathy. Although granuloma annulare is not a classical differential diagnosis, two other cases with similar histological findings have already been published.