F-18 FDG Uptake in Respiratory Muscle Mimicking Metastasis in Patients with Gastric Cancer.
- Author:
Seung Jin CHOI
1
;
Jeong Ho KIM
;
In Young HYUN
Author Information
1. Department of Nuclear Medicine, Inha Univiersity College of Medicine, Incheon, Korea. iyhyun@inha.ac.kr
- Publication Type:Case Report
- Keywords:
F-18 FDG;
PET/CT;
respiratory muscles;
chronic obstructive pulmonary disease
- MeSH:
Abdomen;
Aged;
Diaphragm;
Electrons;
Glucose;
Humans;
Intercostal Muscles;
Lymph Nodes;
Metabolism;
Muscles;
Neck;
Neoplasm Metastasis*;
Peritoneum;
Positron-Emission Tomography and Computed Tomography;
Pulmonary Disease, Chronic Obstructive;
Respiratory Muscles*;
Ribs;
Stomach Neoplasms*;
Thoracic Wall
- From:Nuclear Medicine and Molecular Imaging
2006;40(4):233-236
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
A 67-year-old man with a history of chronic obstructive pulmonary disease (COPD) underwent F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) for staging of gastric cancer. The projection images of F-18 FDG PET/CT showed intensely increased F-18 FDG uptake in the anterior neck, chest wall, and upper abdomen. We suspected distant metastases of cervical lymph nodes, ribs, and peritoneum in gastric cancer. However, the transaxial images of F-18 FDG PET/CT showed abnormal F-18 FDG uptake in scalene muscles of anterior neck, intercostal muscles of chest wall, and diaphragm of upper abdomen. Patients with COPD use respiratory muscles extensively on the resting condition. These excessive physiologic use of respiratory muscles causes increased F-18 FDG uptake as a result of increased glucose metabolism. The F-18 FDG uptake in respiratory muscles of gastric cancer patient with COPD mimicked distant metastases in cervical lymph nodes, ribs, and peritoneum.
