Pigmented villonodular synovitis of the temporomandibular joint with intracranial extension: a case and literature review

Recurrent Temporal Bone Tenosynovial Giant Cell Tumor with Chondroid Metaplasia: The Use of Imaging to Assess Recurrence

“…Some authors advocate that the majority of tumors affecting the TMJ are extraarticular, more infiltrative, extend to the temporal bone, and have higher recurrence rates 1,5 . By defi- Skull base involvement and intracranial extension have been previously described [3][4][5][6] as has a case presenting as a middle cranial fossa mass 7 . The rare malignant form of TGCT with metastatic lesions in the lungs and lymph nodes has also been documented 8 .…”

Arthroscopic management of intra-articular pigmented villonodular synovitis of temporomandibular joint

“…Although PVNS is a benign lesion, it can grow with an aggressive pattern, and it extends extra-articularly in most of the reported cases. Intracranial extension has also been reported in some severe case 2,7,8,11,21 . It is often misdiagnosed as parotid tumour or disorder of the TMJ because of the low incidence and atypical presentations 1,4,9,19,22 Arthroscopy of the TMJ was introduced by Ohnishi in 1975, and is a clinically useful procedure in the diagnosis and treatment of various TMJ diseases.…”

“…It has been reported that most of the reported cases of PVNS of the TMJ belong to the extra-articular variant, which is associated with a more aggressive local infiltrative behaviour and higher rate of local recurrence than the localized type 6,7,11,20 . The lesions in the present patients were all localized within the joint.…”

Extradiskal Pathology of the Temporomandibular Joint: MR Imaging and CT Manifestations

“…As of 2009, fewer than 30 cases affecting the TMJ had been reported in the literature. 8 Although the etiology remains unclear, there is widespread agreement that there is either a chronic inflam-matory response of the synovium or a benign neoplasia. 9 PVNS affects a wide age range of patients, with men and women affected equally.…”

“…10,11 Intracranial extension has been described, though violation of the dura is variable. 8,10,12 On MR imaging, PVNS of the TMJ has the appearance of a multiloculated mass, and there may be enhancement of septations and solid components. Hemosiderin is usually present and hypointense on T1 and T2, though the cystic components may have high T2 signal intensity.…”