A photodistributed rash. Pellagra.
D000230:Adenocarcinoma / Q000601:surgery; D001706:Biopsy; D005743:Gastrectomy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010383:Pellagra / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D012867:Skin / Q000473:pathology; D013274:Stomach Neoplasms / Q000601:surgery; D013472:Sunlight