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Grading System and Surgical Strategy for Temporal Bone Diffuse-Type Tenosynovial Giant Cell Tumor
Feng Lin1,2,3, Yibo Zhang1,2, Peng Zhao4
1Department of Otology and Skull Base Surgery, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China.
The Laryngoscope
|October 28, 2021
Summary
A new grading system for diffuse type tensosynovial giant cell tumor (D-TGCT) of the temporal bone aids surgical planning. Gross total resection is key, with long-term follow-up essential for managing this rare tumor.
Area of Science:
- Neurosurgery
- Oncology
- Otolaryngology
Background:
- Diffuse type tensosynovial giant cell tumor (D-TGCT) of the temporal bone is rare.
- Optimal surgical strategies for D-TGCT require further definition.
Purpose of the Study:
- To develop a novel grading system for temporal bone D-TGCT.
- To identify appropriate surgical approaches based on tumor grade.
Main Methods:
- Retrospective cohort study of 31 patients with temporal bone D-TGCT.
- Development of a grading system based on tumor location and neurovascular involvement.
- Analysis of clinical data, imaging, surgical approaches, and outcomes.
Main Results:
- Grade II tumors were most common (13/31).
- Various surgical approaches were employed, including subtemporal middle cranial fossa approach (SMCF) and infratemporal fossa approach.
- Gross total resection was achieved in all patients; recurrence occurred in 3 patients.
Conclusions:
- Gross total resection is the primary treatment for temporal bone D-TGCT.
- The novel grading system assists in selecting optimal surgical strategies.
- Long-term postoperative follow-up is crucial.
