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Gastric Schwannoma Demonstrated on 18 F FDG PET/CT With Pathological Correlation
Jeffrey Chen1, Chuong Bui1, Han Loh1
1From the Department of Nuclear Medicine and PET, Nepean Hospital, Kingswood.
Abstract:
A 66-year-old man with background hypertension and type 2 diabetes presented with 1 month history of epigastric pain for investigation. Abdominal CT and MRI identified round homogeneously enhancing mass arising from the lesser curvature of the stomach. On 18 F-FDG PET/CT, the gastric mass demonstrated intense FDG uptake (SUV max , 9.6). The patient subsequently underwent partial gastrectomy, with pathological features and immunohistochemical patterns consistent with gastric schwannoma.
Insights
A rare gastric schwannoma was diagnosed in a patient with epigastric pain. Imaging revealed a distinct mass with high FDG uptake, confirmed by pathology after surgery.
Area of Science:
- Gastroenterology
- Surgical Oncology
- Diagnostic Imaging
Background:
- A 66-year-old male with hypertension and type 2 diabetes presented with a month of epigastric pain.
- Differential diagnoses for epigastric pain include various gastrointestinal pathologies.
Observation:
- Abdominal CT and MRI revealed a round, homogeneously enhancing mass on the stomach's lesser curvature.
- 18F-FDG PET/CT demonstrated significant hypermetabolism within the gastric mass, with a maximum standardized uptake value (SUV max) of 9.6.
Findings:
- Surgical resection via partial gastrectomy was performed.
- Pathological examination and immunohistochemical analysis confirmed the diagnosis of gastric schwannoma.
Implications:
- This case highlights the importance of considering rare tumors in the differential diagnosis of gastric masses.
- Advanced imaging techniques like PET/CT can aid in characterizing gastric lesions and assessing their metabolic activity.
- Accurate diagnosis and surgical management are crucial for favorable outcomes in patients with gastric schwannoma.
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