Tripe palms and malignancy.

Tripe palms are characterized clinically by thickened velvety palms with pronounced dermatoglyphics. We describe two patients with triple palms and pulmonary tumors, and review the 77 patients with idiopathic- and malignancy-associated tripe palms reported in the world literature. The majority (94%) of published cases of tripe palms occurred in patients with cancer; only five patients showed no evidence of an associated malignancy. Tripe palms were frequently seen in conjunction with acanthosis nigricans (77% of cases), although they can occur alone (23% of cases). In cancer patients with tripe palms alone, the most common underlying neoplasm was pulmonary carcinoma (53% of cases), whereas patients with both tripe palms and acanthosis nigricans frequently had gastric (35% of cases) or pulmonary (11% of cases) carcinomas. A wide variety of other solid tumors have also been observed. Importantly, in over 40% of patients, tripe palms were the presenting feature of a previously undiagnosed malignancy. Therefore, all patients with tripe palms should be evaluated with a full diagnostic work-up for an associated malignancy, particularly lung or gastric carcinoma.