title: Signet ring melanoma, S-100 negative.
authors.forename: F
authors.initials: F
authors.lastname: Bonetti
authors.forename: R
authors.initials: R
authors.lastname: Colombari
authors.forename: G
authors.initials: G
authors.lastname: Zamboni
authors.forename: M
authors.initials: M
authors.lastname: Chilosi
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis / Q000473:pathology*; D008545:Melanoma / Q000175:diagnosis / Q000473:pathology*; D008875:Middle Aged