DOI: 10.12890/2023_004048

PET scanning may not distinguish benign schwannoma from metastasis in a patient with lung adenocarcinoma

Authors

  • Motoi Ugajin Department of Respiratory Medicine, Nagoya Tokushukai General Hospital, Kasugai City, Japan; Department of Respiratory Medicine and Allergology, Aichi Medical University, Nagakute City, Japan
  • Masakatsu Yamashita Department of Thoracic Surgery, Nagoya Tokushukai General Hospital, Kasugai City, Japan
  • Hisanori Kani Department of Thoracic Surgery, Nagoya Tokushukai General Hospital, Kasugai City, Japan

ugarin2001@yahoo.co.jp

Keywords

Lung adenocarcinoma, schwannoma, positron emission tomography, biopsy

Abstract

A 69-year-old man was diagnosed with lung adenocarcinoma with metastasis because two masses in the right intercostal space and right back muscle showed high accumulation on positron emission tomography (PET). The 6-month treatment with osimertinib significantly reduced his lung lesion, but no changes were observed in the metastatic lesions. Needle biopsy revealed that the lesion in the right back muscle was a schwannoma. Surgical resection revealed that the right intercostal lesion was also a schwannoma; subsequently, a right upper lobectomy was performed. The patient was finally diagnosed with lung adenocarcinoma without metastasis. High accumulations of lesions observed on PET may indicate schwannomas.

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Published

2023-08-31

Issue

Vol. 10 No. 10 (2023)

Categories

How to Cite

1.
Ugajin M, Yamashita M, Kani H. PET scanning may not distinguish benign schwannoma from metastasis in a patient with lung adenocarcinoma. EJCRIM [Internet]. 2023 Aug. 31 [cited 2026 Nov. 3];10(10). Available from: https://ejcrim.com/index.php/ejcrim/article/view/4048

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