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Primary chondrosarcoma arising in the parotid gland
S Maruya1, H Kurotaki, S Fujita
1Department of Otolaryngology, Hirosaki University School of Medicine, Hirosaki, Japan.
Summary
A rare chondrosarcoma occurred in the parotid gland of a 45-year-old man presenting with painless swelling. This case highlights the parotid gland as a potential site for primary chondrosarcoma development.
Area of Science:
- Oncology
- Pathology
- Head and Neck Surgery
Background:
- Chondrosarcoma is a malignant tumor arising from cartilage.
- Primary chondrosarcoma of the parotid gland is exceptionally rare.
- Parotid gland tumors are typically benign, such as pleomorphic adenoma.
Observation:
- A 45-year-old man presented with painless swelling in the left postauricular region.
- Computed tomography revealed a well-circumscribed tumor in the parotid area with calcification.
- Surgical removal was performed under the initial diagnosis of a benign parotid tumor.
Findings:
- Histopathological examination confirmed a low-grade chondrosarcoma.
- The tumor exhibited lobular growth and was distinct from the surrounding parotid gland tissue.
- No evidence of pleomorphic adenoma component was found.
- No recurrence was observed two months post-operation.
Implications:
- This case demonstrates that the parotid gland can be a site for de novo primary chondrosarcoma.
- Highlights the importance of thorough histopathological evaluation for parotid gland masses.
- Contributes to the understanding of rare head and neck malignancies.