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.
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.