[Dermo-hypodermic lymphoid pseudotumors with follicular hyperplasia. Apropos of a case]

We report the case of a female patient with ubiquitously distributed cutaneous and subcutaneous nodules measuring 2 to 6 cm along their long axis. These nodules first developed at the age of 63 years and subsequently appeared in crops separated by spontaneous remissions. Studies of removed nodules demonstrated diffuse lymphoid follicular hyperplasia suggesting a tumor and raising difficult nosologic problems, especially regarding relationships with the extranodal multicentric Castleman syndrome. In march 1987, biopsy of a large scapular nodule spreading into the striated muscle suggested possible transformation into a low grade malignant lymphoma of the lymphoplasmocytoid type.