Tophaceous pseudogout is a rare variant of the calcium pyrophosphate dihydrate (CPPD) disorder, with predilection for the TMJ. It is characterized by calcific deposits composed of rhomboid- or rectangular-shaped crystals that exhibit birefringence when examined under polarized light. We hereby present a case of a 65-year-old man with left pre-auricular tenderness and malocclusion. CT imaging was notable for a left TMJ mineralized mass with erosion of the condylar head. Treatment involved excision of the mass with eminectomy, condylectomy, and a stock total TMJ reconstruction. In this report, important considerations for diagnosis, biopsy, and surgical treatment with emphasis on reconstruction for tophaceous pseudogout of the TMJ have been highlighted by the authors.
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http://dx.doi.org/10.1007/s10006-021-01013-2 | DOI Listing |
Rheum Dis Clin North Am
November 2024
Department of Medicine, Allergy/Immunology & Rheumatology Division, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Box 695, Rochester, NY 14642, USA. Electronic address:
Am J Surg Pathol
August 2024
Department of Pathology, Timone University Hospital, Marseille.
Recently, FN1 fusions to receptor tyrosine kinase genes have been identified in soft tissue tumors with calcified chondroid matrix named calcifying chondroid mesenchymal neoplasms (CCMNs). We collected 33 cases of CCMN from the French network for soft tissue and bone tumors. We performed whole-exome RNA sequencing, expression analysis, and genome-wide DNA methylation profiling in 33, 30, and 20 cases of CCMN compared with a control group of tumors, including noncalcified tenosynovial giant cell tumor (TGCT).
View Article and Find Full Text PDFOtol Neurotol
April 2024
Department of Otolaryngology-Head and Neck Surgery, San Antonio Uniformed Services Health Education Consortium, JBSA-Fort Sam Houston, Texas.
Objective: Tophaceous lesions of the middle ear from calcium pyrophosphate deposition disease (CPPD, or pseudogout) and gout are infrequently reported. Recognizing its characteristic findings will allow clinicians to accurately narrow the differential diagnosis of bony-appearing middle ear lesions and improve management.
Patients: Two consecutive cases of tophaceous middle ear lesions presenting to a tertiary care center between January 2021 and December 2021.
Surg Pathol Clin
March 2024
Department of Laboratory Medicine and Pathology, University of Washington, 1959 Northeast Pacific Street, Box 357705, HSB Room K072A, Seattle, WA 98195-7705, USA. Electronic address:
Calcified chondroid mesenchymal neoplasms (CCMN) represent a morphologic spectrum of related tumors. Historically, chondroid matrix or chondroblastoma-like features have been described in soft tissue chondroma, tenosynovial giant cell tumors (especially of the temporomandibular joint (TMJ) region), and in a subset of tophaceous pseudogout. Recently, these tumors have been found to share FN1-receptor tyrosine kinase (RTK) fusions.
View Article and Find Full Text PDFIndian J Otolaryngol Head Neck Surg
June 2023
Department of Oral and Maxillofacial Surgery, Institute of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575 Japan.
We report a case of tophaceous pseudogout that occurred in the temporomandibular joint (TMJ) and presented with skull base destruction. The patient was a 73-year-old woman, who complained of an obstructed ear sensation in December 2021. The otolaryngological examination was unremarkeable, and a computed tomography scan revealed a calcified lesion in the left TMJ.
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