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Arch Otolaryngol Head Neck Surg. 2004;130:118-119.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Diagnosis: Ectopic thyroid tissue

The radiographic differential diagnosis of the posterior mediastinal mass in the present case includes neurogenic tumors (eg, neurilemoma/schwannoma, neurofibroma, ganglioneuroma/ganglioneuroblastoma, neuroblastoma, and paraganglioma) and esophageal disease (eg, esophageal duplication cyst and primary esophageal neoplasm). Schwannoma of the right recurrent laryngeal nerve was the primary preoperative consideration, based on the uniform enhancement of the mass and its location in the tracheoesophageal groove. However, a computed tomography–guided biopsy of the mass revealed normal thyroid tissue that was completely separate from the thyroid gland. The computed tomographic scan also showed that the tissue was completely separate from the thyroid gland.

In the operating room, the hypervascular mass was found in the paraesophageal region of the lower part of the right side of the neck. The right recurrent laryngeal nerve and thyroid gland were found to be separate from the mass, and the nerve was dissected free and preserved. Intraoperative frozen-section analysis demonstrated benign . . . [Full Text of this Article]

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Arch Otolaryngol Head Neck Surg. 2004;130(1):117.
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