What Is STER?
An advanced endoscopic technique creating a submucosal tunnel to resect lesions in the esophagus or upper GI wall.
Why Do I Need STER?
Indicated for small submucosal tumors (leiomyoma, GIST) ≤3 cm in muscularis propria.
How Should I Prepare?
- Fasting 8 hours.
- Consent for general anesthesia and advanced endoscopy.
What Happens During the Procedure?
- Creation of mucosal entry point; submucosal tunneling to lesion.
- En bloc tumor excision; closure of entry with clips.
- Duration: 60–120 minutes.
What Can I Expect Afterwards?
- Hospital admission 1–2 days.
- Liquid diet for 1–2 days; advance as tolerated.
Risks & Possible Complications
- Perforation (3–5%)
- Bleeding (5–10%)
- Infection in tunnel tract (<5%)
Follow-Up
- Surveillance endoscopy in 3–6 months.
- Imaging if high-risk histology.
Emergency Contact
Dr. AK Lohana Clinics & Endoscopy Services
