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Multiple disseminated keratoacanthoma-like nodules: a rare form of distant metastases to the skin

A. Jankowska-Konsur,Karolina Kopeć-Pytlarz,Z. Woźniak,A. Hryncewicz-Gwóźdź,J. Maj

Published 2018 in Advances in Dermatology and Allergology

ABSTRACT

Cutaneous metastases are found in approximately 0.7–10.4% of internal malignancies and they may rarely be the first symptom of the underlying neoplasm [1]. Typically, cutaneous secondaries present as a single, erythematous nodule, occasionally ulcerated, however, other presentations, including erysipelas carcinomatosa, alopecia neoplastica or carcinoma en cuirasse in the course of the breast cancer, or angiomatous tumors in the course of renal carcinoma may be occasionally observed. The metastases assimilating keratoacanthomas are extremely rare [2, 3]. Herein, we present a 72-year-old man, cigarette smoker, who was referred to our department with disseminated skin tumors of unknown etiology. On admission, domeshaped, inflamed tumors, some of them with central, keratin-filled craters, clinically mimicking keratoacanthomas were observed on the scalp, forehead, nose, neck and trunk (back and left shoulder) (Figures 1, 2). All the

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