Phylloid hypermelanosis: further report of an unusual syndrome.

Abstract

The phylloid pattern is a well-defined but rather unusual category of pigmentary mosaicism that occurs in two different forms [1]. Firstly, phylloid hypomelanosis is a distinct entity caused by trisomy 13q [2-4]. In a publication from 1997, the diagnosis was made by one of the authors (R.H.) during a visit of Dr. Horn s laboratory in Berlin in 1996 [4]. Secondly, phylloid hypermelanosis appears to denote a heterogeneous group of disorders from which distinct entities may emerge in the future [5-8]. Here we present an additional case of phylloid hypermelanosis that represents, according to our knowledge, the seventh published case of this sporadically occurring disorder.