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Ectopic cervical thymoma located in the carotid triangle.
Jitsuro Tsukada1, Ichiro Hasegawa, Hiroaki Sato
1Department of Diagnostic Radiology, Kawasaki Municipal Hospital, 12-1 Shinkawadori, Kawasaki-ku, Kawasaki, Kanagawa, Japan. jitsurooo@gmail.com
Japanese Journal of Radiology
|October 18, 2012
Summary
Ectopic cervical thymoma, an extremely rare neck tumor, was diagnosed in a 44-year-old woman. This case highlights the importance of considering this rare diagnosis for neck masses with specific CT findings.
Area of Science:
- Head and Neck Surgery
- Oncology
- Radiology
Background:
- Ectopic cervical thymoma is an extremely rare condition.
- It is believed to originate from aberrant embryonic thymus migration.
- This case presents a unique instance of this tumor in the carotid triangle.
Observation:
- A 44-year-old woman presented with a mass in the right carotid triangle.
- Computed tomography (CT) revealed a homogeneous mass with intratumoral septa and cystic changes.
- Initial CT showed isodensity with muscle, lacking fat or calcification.
Findings:
- Surgical resection and histological study confirmed type AB thymoma.
- Type AB thymoma is characterized by a mix of type A features and lymphocytic infiltration.
- This subtype is considered benign with a favorable prognosis.
Implications:
- Ectopic cervical thymoma should be considered in the differential diagnosis of carotid triangle masses.
- Typical CT findings suggestive of thymoma are crucial for diagnosis.
- Early and accurate diagnosis can lead to timely surgical intervention and good outcomes.
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