A case of giant bathing trunk naevus with neurofibroma-like change.

It is recognized that cells of melanocytic naevi may resemble neuroid structures and the term neurotization has been used to describe this phenomenon. This may result in difficulty in the histological differentiation between naevi and neurofibromas. We report the case of a patient with a giant bathing trunk naevus which has undergone marked neurotization and in whom there had been diagnostic difficulty.