[Myelosclerosis : pseudo-tumors forms (author's transl)].

Signs of pseudo-tumor growth may be seen in myelosclerosis. Eight personal cases and a review of the literature are discussed in this article. The observations here reported cover pseudo-tumors occurring in ganglia, liver, suprarenals (3), abdomen and pancreas. They are classified as sclerotic haemopoietic tumors. This category has particular characteristics when compared to extra-medullary haemopoiesis, extra-medullary haemopoietic growths, and a fourth category, sarcoma-type malignant tumors in myelosclerosis. The identity of these last three entities is widely discussed in the literature. The main histological and cytological characteristics for pseudo-tumor diagnosis in myelosclerosis are reported here.