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Case Reports: Rare disease
Unsuspected gastric glomus tumour
  1. Caleb Stahl1,
  2. William G Wong2,
  3. Julie C Fanburg-Smith3 and
  4. Charles C Vining2
  1. 1Penn State College of Medicine, Hershey, Pennsylvania, USA
  2. 2Department of Surgery, Division of Surgical Oncology, Penn State College of Medicine, Hershey, Pennsylvania, USA
  3. 3Department of Pathology and Laboratory Medicine Division of Anatomic Pathology, Penn State College of Medicine, Hershey, Pennsylvania, USA
  1. Correspondence to Caleb Stahl; cstahl1{at}pennstatehealth.psu.edu

Abstract

Gastric glomus tumours (GGTs) are rare predominantly benign, mesenchymal neoplasms that commonly arise from the muscularis or submucosa of the gastric antrum and account for <1% of gastrointestinal soft-tissue tumours. Historically, GGT has been difficult to diagnose preoperatively due to the lack of unique clinical, endoscopic and CT features. We present a case of an incidentally identified GGT in an asymptomatic man that was initially considered a neuroendocrine tumour (NET) by preoperative fine-needle aspiration biopsy with focal synaptophysin reactivity. An elective robotic distal gastrectomy and regional lymphadenectomy were performed. Postoperative review by pathology confirmed the diagnosis of GGT. GGTs should be considered by morphology as a differential diagnosis of gastric NET on cytology biopsy, especially if there is focal synaptophysin reactivity. Additional staining for SMA and BRAF, if atypical/malignant, can help with this distinction. Providers should be aware of the biological behaviour and treatment of GGTs.

  • Gastric cancer
  • Stomach and duodenum
  • Pathology
  • Surgical oncology

https://doi.org/10.1136/bcr-2022-253020

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    Footnotes

    • Contributors CS, WGW, JCF-S and CCV developed the original idea, reviewed literature data, prepared the manuscript and provided additional review. CS contributed to major areas of the manuscript and provided a revision of the manuscript for important intellectual content.

    • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

    • Competing interests None declared.

    • Provenance and peer review Not commissioned; externally peer reviewed.