# Large Left Shamblin Type III Carotid Body Tumor With Tracheopharyngeal Deviation and Midline Shift: A Case Report

## TL;DR

A 46-year-old woman had a large carotid body tumor successfully removed without complex procedures, highlighting the need for early detection and skilled surgical intervention.

## Contribution

This case report presents a successful surgical approach for a large Shamblin type III carotid body tumor without preoperative embolization or vascular reconstruction.

## Key findings

- A 4.2 cm carotid body tumor caused tracheopharyngeal deviation and midline shift.
- The tumor was successfully resected via a standard neck incision without complex vascular techniques.
- Early detection and experienced surgical management are critical for favorable outcomes.

## Abstract

A 46-year-old female was referred for treatment of a large left parapharyngeal mass, incidentally discovered and later confirmed as a Shamblin type III carotid body tumor (CBT). There was no family history of CBTs. The patient exhibited no clinical signs of catecholamine excess, and both serum and urine catecholamine levels were normal. CT and CT angiography revealed a 4.2 cm mass arising from the carotid bifurcation, causing significant medial deviation of the trachea and pharynx. Ultrasound imaging showed complete encasement of the carotid artery and bulb by the tumor. Surgical resection was successfully performed via a longitudinal left neck incision, without the need for preoperative embolization, mandibular dislocation, or complex vascular reconstruction of the carotid bifurcation. This case underscores the importance of early detection and timely intervention by an experienced vascular surgical team to manage these complex tumors before they cause significant compression of neck structures, necessitating a more challenging procedure.