ABSTRACT
Keratoacanthomas (KAs) originally considered benign tumour,
but some researchers believe that KA
is a borderline tumor or a subtype of squamous cell carcinoma. Few
distant metastasis of Kas has been reported. A 42-year-old woman
presented with a 1.8 x 1.8 cm keratoacanthoma (KA)
of the nose tip. After 1 month of her radiotherapy, two neoplasms of KA
developed from the bridge of the nose, 1cm and 3.4 cm away from the
primary focus. To the best of our knowledge, no case of adjacent tissue
skip metastasis of KA on the nose tip have been
reported to date.
Keywords: Case report; Metastasis; Keratoacanthomas;
Superficial X-ray therapy