Primary, nonpigmented, isolated sarcoma of the skin is of relatively infrequent occurrence. The majority of dermatologists have seen but few cases, if one may judge from the scarcity of reports on the subject. Advanced sarcomas of the skin and subcutaneous tissues are more frequently encountered by the surgeons because of the large size attained by these growths and the necessity of surgical removal. Hartzell1 has remarked that the sarcoma of the surgeon differs widely from that of the dermatologist.
The classification of the cutaneous sarcomas is still a debated question. In recent years the group of malignant pigmented tumors formerly regarded as melanosarcoma has been classed by most pathologists as nevocarcinoma or malignant melanoma. The various sarcoid, lymphoid and myeloid tumors, as well as Kaposi's hemorrhagic sarcoma, have also been separated from the pure sarcomas of the skin. The nonpigmented sarcomas are usually subdivided into localized or single and