[Crosti's reticulosis. Review of 15 cases].

Fifteen patients with clinical and histological features of Crosti's reticulosis are reviewed. Twelve patients had lesions on the upper back and these were the only ones in eight of them. The other ones had extradorsal lesions. The histological picture was always compatible with Crosti's reticulosis. All the patients were treated by superficial roentgen therapy (1,200-1,500 rads) with total regression of the lesions. Four patients were lost for follow up. One progressed to lymphocytic lymphoma and another to Hodgkin's disease. It is possible that Crosti's reticulosis is not an autonomous entity, but a localized stage of more than one lympho-histiocytic neoplasia.