Cutaneous metastasis of carcinoma of the internal organs is of relatively infrequent occurrence. We wish to emphasize that such metastasis may be limited to the scalp and that a diagnosis even of carcinoma of the internal organs may be established first by recognition of the cutaneous metastasis and by means of cutaneous biopsy. We wish to report 4 cases in which cutaneous metastasis of internal carcinoma was limited to the scalp, and then to discuss briefly various conditions of the scalp with which the metastatic lesions might be confused. REPORT OF CASES Case 1. —A white man 58 years old came to the Mayo Clinic in May 1925, for treatment of jaundice of three months' duration. He had noticed in the right upper quadrant of the abdomen a mass which had increased in size. He had lost 40 pounds (18 Kg.) during the three months before he was seen at