[Crosti's reticulosis. Report on three cases, one with ultrastructural study (author's transl)].

Crosti's reticulosis is defined as a peculiar form of well-circumscribed, slow developing lymphomas in adults, with a malignant histological picture. Three cases with typical dorsal localisation according to Crosti's first description are reported and the cardinal features of this type of tumour are recalled. One observation includes an ultrastructural study which confirms the malignant nature of histiocytes in this disease.

[Blue rubber bleb naevus and glomangiomatosis, unicity or duality? About two cases (author's transl)].

About 2 personal cases, a review concerning Blue Rubber Bleb Naevus syndrome and glomangiomatosis is presented. Attention is drawn to the different histological pictures of these disease. Importance of a clear differentiation from the viewpoint of prognosis is emphasized.

[Keratosis lichenoides striata associated with a pseudo-sinhum and a neurological picture (author's transl)].

The authors reported a case which does not seem to be possibly related to any known clinical entity; an aspect of keratosis lichenoides striata is associated with an ichthyosiform condition of the trunk and a pseudo-ainhum; there is also a neurological syndrome similar to a multilocular sclerosis. This patient resembles the previous cases of the literature; however there is neither erythema nor any striation at the back of the knees. There is also a pseudo-ainhumm.