Nucl Med Mol Imaging.  2013 Jun;47(2):138-140.

Benign Schwannoma Mimicking Metastatic Lesion on F-18 FDG PET/CT in Differentiated Thyroid Cancer

Affiliations
  • 1Department of Nuclear Medicine, Catholic University of Daegu School of Medicine, Daegu, South Korea. kufa77@hanmail.net

Abstract

We report a case of benign schwannoma mimicking metastatic carcinoma. A 55-year-old female with papillary thyroid carcinoma underwent total thyroidectomy. F-18 fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) demonstrated a focal hypermetabolic lesion with maximum standardized uptake value (SUVmax) 5.3 at the right chest wall. Conventional chest CT demonstrated a 5.4 cmovoid mass lesion between the intercostal muscles and liver. Pathology revealed a schwannoma by tumor excision. This case demonstrates that benign schwannoma may demonstrate FDG uptake mimicking metastatic carcinoma.

Keyword

Schwannoma; Mimicking carcinoma; F-18 FDG PET/CT; Differentiated thyroid cancer

MeSH Terms

Carcinoma
Electrons
Female
Humans
Intercostal Muscles
Liver
Neurilemmoma
Thoracic Wall
Thorax
Thyroid Gland
Thyroid Neoplasms
Thyroidectomy
Carcinoma
Thyroid Neoplasms
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