6Braverman IM. Skin manifestations of internal malignancy. Clin Geriatr Med, 2002, 18 : 1 - 19.
7Brenner S, Tamir E, Maharshak N, et al. Cutaneous manifestations of internal malignancies. Clin Dermatol, 2001, 19:290 - 297.
8Lookingbill DP, Spangler N, Helm KF. Cutaneous metastases in patients with metastatic carcinoma: a retrospective study of 4020 patients. J Am Acad Dermatol, 1993, 29:228 - 236.
10Lookingbill DP, Spangler N, Sexton FM. Skin involvement as the presenting sign of internal carcinoma. A retrospective study of 7316 cancer patients. J Am Acad Dermatol, 1990, 22:19 - 26.