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Temporal bone pathological study on maxillary sinus carcinoma with bilateral temporal bone metastasis.
Peijen Su1, Chen-Chieh Kuan, Kenji Kondo
1Department of Otolaryngology and Head and Neck Surgery, Faculty of Medicine, Graduate School of Medicine, University of Tokyo, Japan.
Acta Oto-Laryngologica
|September 14, 2007
Summary
Metastasis from maxillary carcinoma spread to bilateral temporal bones via multiple routes. This case highlights diverse pathways of tumor dissemination and their impact on hearing and vestibular function.
Area of Science:
- Otolaryngology
- Oncology
- Pathology
Background:
- Maxillary carcinoma metastasis to the temporal bone is rare.
- Understanding metastatic pathways is crucial for diagnosis and treatment.
Observation:
- A case of left maxillary carcinoma metastasizing to bilateral temporal bones.
- Symptoms included progressive left-sided hearing loss, vestibular dysfunction, and otitis media.
- Histopathology revealed direct and hematogenous spread on the ipsilateral side.
Findings:
- Contralateral temporal bone showed hematogenous spread to petrous bone, mastoid, and facial canal.
- Tumor involvement of cochlear aqueduct suggested early meningeal carcinomatosis.
- Histological changes included vascular stria atrophy and spiral ganglion diminution.
- Middle ear and mastoid effusion were noted on the contralateral side.
Implications:
- Demonstrates varied routes of tumor cell dissemination to the temporal bone.
- Highlights hematogenous and subarachnoid spread as key mechanisms for contralateral metastasis.
- Emphasizes the importance of considering diverse metastatic pathways in head and neck cancers.
