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[Hyperplasia of gingivae in the course of incomplete form of Melkersson-Rosenthal syndrome].

A case of incomplete Melkersson-Rosenthal (s. M-R) syndrome manifesting itself by the lower lip and cheeks' mucous membrane oedema and hyperplasia of gingivae has been described. Histopathological examination of the cheeks has demonstrated disseminated, perivascular inflammatory infiltrations of sarcoid type, whereas massive infiltration composed nearly exclusively of plasmatic cell has dominated in segments of gingivae. Electron microscopic examination has demonstrated increased migration of the cells resembling lymphocytes through the epithelium towards the surface and progressive morphological changes leading to the disintegration both lymphocytar cells and plasmatic ones and symptoms of interstitium fibrotic processes.