n. 脂肪瘤( lipoma的名词复数 )
The exact pathogenesis of the deformity is still obscure, but most authors believe that macrodactyly is related to neurofibromatosis or lipomata degeneration.
确切发病原因尚不清楚,多认为与神经纤维瘤病或脂肪瘤退变有关。