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  3. A Rare Case Of Splenunculus Buried Within The Stomach.
  1. Home
  3. A Rare Case Of Splenunculus Buried Within The Stomach.

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A Rare Case of Splenunculus Buried within the Stomach.

Mazen Farhat1, Karam Karam2, Philippe Attieh3

  • 1Department of Gastroenterology and Hepatology, St George University of Beirut, Beirut, Lebanon.

European Journal of Case Reports in Internal Medicine
|January 15, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Gastric accessory spleen is a rare congenital anomaly that can mimic gastric tumors. Accurate diagnosis using endoscopic ultrasound-guided biopsy prevents unnecessary surgery for this benign condition.

Keywords:
EUSStomachaccessory liverfundussubmucosal mass

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Area of Science:

  • Gastroenterology
  • Pathology
  • Surgical Oncology

Background:

  • Accessory spleen (splenunculus) is a congenital anomaly from failed splenic anlage fusion.
  • Most commonly found near the spleen or pancreas, rarely in the stomach wall.
  • Gastric accessory spleen can mimic submucosal neoplasms, posing diagnostic challenges.

Purpose of the Study:

  • To report a case of gastric accessory spleen diagnosed preoperatively.
  • To highlight the diagnostic utility of endoscopic ultrasound-guided fine needle biopsy (EUS-FNB).
  • To emphasize the importance of considering gastric accessory spleen in the differential diagnosis of gastric submucosal lesions.

Main Methods:

  • Case presentation of a 37-year-old male with epigastric pain.
  • Endoscopy revealed a gastric submucosal mass.
  • Endoscopic ultrasound (EUS) and EUS-guided fine needle biopsy (EUS-FNB) with immunohistochemistry.

    • Main Results:

    • EUS showed a hypoechoic, homogeneous lesion in the gastric wall.
    • EUS-FNB revealed lymphoid aggregates, littoral cells, and macrophages.
    • Immunohistochemistry excluded other neoplasms, confirming gastric accessory spleen.

    Conclusions:

    • Gastric accessory spleen is a rare, benign condition presenting as a gastric submucosal mass.
    • EUS-FNB and immunohistochemistry are crucial for accurate diagnosis, avoiding overtreatment.
    • Recognition of imaging and histopathologic features prevents misdiagnosis.