A Case of Perforated TMJ Disc with New Growth of Lymphatic Duct in Hyperplastic Synovial Membrane

Histopathological Study on Section of Discectomy in Human Adult Temporomandibular Joint

Abstract

Recently, a patient was encountered who had a perforated disc in the temporomandibular joint.
MR images showed an anterior disc displacement on the right side.
Discectomy and condyle head plasty were performed. Histological examination of the extracted disc by hematoxylin and eosin stain, as well as toluidine blue stain, revealed hyperplastic synovial membrane and osteochondroid metaplasia.
Immunohistological examination of the extracted disc by antigen of type IV collagen and factor-Vlfrelated antigen revealed specific new growth of lymphatic duct in the hyperplastic synovial membrane.