The first two cases of malignant acanthosis nigricans associated with osteogenic sarcoma differ from other cases associated with tumor with respect to the distribution of lesions and a young age of onset.
Garrott TC. Malignant Acanthosis Nigricans Associated With Osteogenic Sarcoma. Arch Dermatol. 1972;106(3):384-385. doi:10.1001/archderm.1972.01620120068018