Bullous prurigo pigmentosa.

Prurigo pigmentosa is a rare inflammatory skin disease of unknown etiology, characterized by recurrent, symmetrical, pruritic, erythematous papules resulting in gross reticular hyperpigmentation. The rash occurs mainly on the back, the chest and the nape of the neck. While PP is observed rather frequently in Japan, only a few cases have come to notice in other countries.

Carcinosarcoma arising in a patient with multiple cylindromas.

Familial cylindromatosis (Brooke-Spiegler syndrome) is a rare autosomal dominant inherited disease characterized by the development of adnexal tumors, mostly cylindromas, but also trichoepitheliomas and spiradenomas. Malignant tumors may occur, usually with the features of a cylindrocarcinoma. The authors describe the case of a 75-year-old woman with the Brooke-Spiegler syndrome who presented with multiple nodules of the scalp, face, and trunk.