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World J Nucl Med. 2019 Dec 18;18(4):413-415. doi: 10.4103/wjnm.WJNM_108_18. eCollection 2019 Oct-Dec.

Serendipitous actinomycosis infection mimicking malignant lesion in carcinoma of unknown primary.

Author information

1
Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Mumbai, Maharashtra, India.
2
Department of Pathology, Tata Memorial Hospital, Mumbai, Maharashtra, India.

Abstract

Actinomycosis is a bacterial infection caused by Actinomyces species that are commensal in the human oral cavity, digestive tract, and genital tract. The present case highlights actinomycosis of the hypopharynx, mimicking malignancy in 18F-fluorodeoxyglucose positron emission tomography-computed tomography.

KEYWORDS:

Actinomycosis of hypopharynx; carcinoma of unknown primary; false positive; head and neck malignancy; positron emission tomography-contrast enhanced computed tomography

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