Schwannoma arising in a lymph node mimicking metastatic pulmonary carcinoma

Respiratory Medicine Case Reports
Mitsuhiro KamiyoshiharaTomohiro Yazawa

Abstract

Schwannomas commonly arise in the torso, extremities, and mediastinum. However, no interlobar lymph node (#11i) lesions have ever been reported. This is a thought-provoking case, because it involved a schwannoma arising in a lymph node mimicking metastatic pulmonary carcinoma. A 72-year-old man was diagnosed with primary pulmonary carcinoma, and 18F-fluorodeoxyglucose (FDG) positron emission tomography demonstrated high FDG uptake in the primary lesion and in #11i, which suggested metastasis (clinical stage IIA). A right lower lobectomy with lymph node dissection was performed. Fortunately, the enlarged #11i was a schwannoma and not metastasis. The take-home message is "a patient with multiple neuromatosis tends to have schwannomas throughout the body".

Citations

Jul 1, 2020·Clinical Nuclear Medicine·Yachao Liu, Baixuan Xu
Aug 28, 2019·Respirology Case Reports·Lae Hyung KangSeong-Hoon Yoon

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Methods Mentioned

BETA
X-ray
biopsy
dissection
SMA

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