Eccrine porocarcinoma. Report of nine cases.

BACKGROUND: Eccrine porocarcinoma is a rare malignancy of the eccrine sweat gland and usually has a long-standing growth on a lower extremity. OBJECTIVE: The aim of this review was to analyze clinical and histopathological findings of eccrine porocarcinoma. METHODS: We report nine cases of eccrine porocarcinoma that we have seen during last 10 years. RESULTS: Eccrine porocarcinoma affects elderly patients in both sexes and is usually found on the lower extremities, but in our review it is similar on the head. The mean size was 1.9 cm in our cases. Elective primary treatment was excision and we did not perform elective lymph node dissection. We have not found evidence of metastases in any of our cases.

[Reconstructive techniques in cutaneous defects of the nasal tip]. / Técnicas reconstructivas de los defectos cutáneos de la punta nasal.

Many techniques are used for repairing nasal tip defects. Our own guidelines are reviewed: Small defects often can be closed directly. Lesions of the nasal tip over 0.5 cm in diameter usually require a skin graft or flap. Postauricular, preauricular, and nasolabial full-thickness skin grafts may produce noticeable color or contour differences. The type of local skin flap used depends on defect size: Local rotation-transposition flaps or the nasalis myocutaneous sliding flap described by Rybka are used for defects 2 cm or less in diameter. Rieger and de Marchac frontonasal flaps are used for defects 2-3.5 cm in diameter. Forehead flaps are used for defects of 3.5 cm or more. We prefer Rybka's flap for nasal tip defects less of 2 cm because it has cosmetic advantages: incisions do not deform natural cutaneous crease lines and chronic edema and "dog ears" secondary to rotation-transposition pedicle flaps are avoided. For more extensive defects, we prefer frontonasal or forehead flaps.