Two Cases of Solitary Nevus Lipomatosus Superficialis (Pedunculated Lipofibroma)

Lee, Young Bok; Yu, Dong Soo; Kim, Jin Wou

Abstract

Nevus lipomatosus superficialis is an uncommon form of connective tissue nevus and is manifest principally by the deposition of fatty tissue in the dermis. In this disease two clinical types are distinguished. The classic type consists of asymptomatic linear, soft, flesh-colored to yellowish papules or nodules that often coalesce into plaque. It is usually located in the pelvic girdle and lumbar area. The solitary form usually appears later in life and can occur at any site. Clinically, it may be confused with neurofibroma and acrochordon. The solitary form has been described as a pedunculated lipofibroma. There is no sexual predilection or hereditary trend. The authors experienced two cases of solitary nevus lipomatosus superficialis. The first case was a 57-year-old male who had a solitary, 1 cm-diametered, flesh-colored, polypoid nodule on the buttock for 4 years. The second case was a 32-year-old female who had a 1.5 cm-diametered, flesh-colored and light brown, polypoid nodule on the right flank for 10 years. Diagnosis was confirmed by clinical and histopathologic findings.