Primary malignant melanoma of the small intestine and the APUD cell concept.
A primary melanoma of the small intestine is reported. A possible explanation of its origin according to the APUD cell concept is suggested. This concept may lessen the doubts and confusion whenever an intestinal melanoma is discovered and a primary tumor at one of the more common sites can reasonably be excluded.
D001078:APUD Cells; D000368:Aged; D005260:Female; D006801:Humans; D007082:Ileum; D007414:Intestinal Neoplasms / Q000209:etiology / Q000473:pathology / Q000601:surgery; D007443:Intussusception / Q000209:etiology / Q000601:surgery; D008545:Melanoma / Q000209:etiology / Q000473:pathology / Q000601:surgery