Case Report: A rare case of gastric cardia bronchogenic cyst: diagnostic challenges and EUS findings with elevated cyst-fluid tumor markers - Report - MDSpire

Case Report: A rare case of gastric cardia bronchogenic cyst: diagnostic challenges and EUS findings with elevated cyst-fluid tumor markers

  • By

  • Jun Huang

  • Qinfang Zheng

  • Nan Yi

  • Zhao Fu

  • JingJing Qi

  • Dongliang Cen

  • Likun Zhong

  • June 19, 2026

  • 0 min

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Uncommon Presentation of a Bronchogenic Cyst in the Gastric Cardia

Background

Bronchogenic cysts are rare congenital malformations typically found in the thoracic cavity, with gastric involvement being exceptionally uncommon. Accurate preoperative diagnosis is challenging due to their potential to mimic other gastrointestinal lesions.

Data Highlights

FindingDetails
Lesion Size4.5 × 5.0 cm
Cyst Fluid AnalysisNeutrophil-predominant, exudative profile
Elevated Tumor MarkersCEA, CA19-9, CA125, CYFRA 21-1

Key Findings

  • Bronchogenic cysts are rare, with gastric cardia involvement being particularly uncommon.
  • The cyst in this case was characterized by a homogeneous hypoechoic appearance on EUS.
  • Fine-needle aspiration revealed dark-brown, turbid cyst fluid with elevated tumor markers.
  • Histopathological examination confirmed the diagnosis of a bronchogenic cyst.
  • No recurrence was observed during 1 year of follow-up post-surgery.

Clinical Implications

Surgical excision remains the definitive treatment for bronchogenic cysts.

Conclusion

This case highlights the diagnostic challenges of gastric bronchogenic cysts and the role of EUS in their evaluation.

Related Resources & Content

  1. BMC Gastroenterology, 2026 -- Gastric bronchogenic cyst pooled case analysis: a case report and systematic review
  2. Guideline, 2022 -- Endoscopic management of subepithelial lesions
  3. Journal of Gastrointestinal Surgery — Role of Bronchoscopy Following EUS in Evaluating Patients with Esophageal Cancer Located at or Above the Carina Prior to Surgery
  4. Journal of Gastrointestinal Surgery — Gastric Glomus Tumor: A Case Study with Imaging Findings
  5. Frontiers in Medicine — Case Report: A seventy-year-stable chest wall bronchogenic cyst with sudden enlargement: coincidence or connection with a concurrent thymic carcinoma?
  6. BMC Cancer — Reply to “Matters Arising: a simple method for diagnosing gallbladder malignant tumors with subserosa invasion by endoscopic ultrasonography”
  7. Gastric bronchogenic cyst pooled case analysis: a case report and systematic review | BMC Gastroenterology | Springer Nature Link
  8. Guideline Endoscopic management of subepithelial l
  9. A Case Report of Bronchogenic Cyst in the Posterior Wall of Gastric Fundus With Elevated CEA and CA199 in Cystic Fluid - Chen - 2025 - Clinical Case Reports - Wiley Online Library

Original Source(s)

Case Report: A rare case of gastric cardia bronchogenic cyst: diagnostic challenges and EUS findings with elevated cyst-fluid tumor markers

  • by Jun Huang, Qinfang Zheng, Nan Yi, Zhao Fu, JingJing Qi, Dongliang Cen, Likun Zhong

  • June 19, 2026

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