# Gastric Mucosa Infection Caused by Sarcina Associated With Ulceration and Upper Gastrointestinal Bleeding

## TL;DR

A rare Sarcina infection caused gastric ulcers and bleeding, showing the need for early diagnosis and treatment.

## Contribution

Reports a rare case of Sarcina infection in the gastric mucosa with ulceration and bleeding.

## Key findings

- Sarcina sp. was identified in gastric ulcers through endoscopy and biopsy.
- Clinical and endoscopic improvement occurred after 32 days of antibiotic therapy.
- The case emphasizes the importance of prompt diagnosis for this rare infection.

## Abstract

Sarcina sp. (Ss) infection is a rare cause of gastrointestinal disease, with only 66 cases reported worldwide. We present a case of a 56-year-old man with alcohol abuse, smoking, and chronic obstructive pulmonary disease who presented with upper gastrointestinal bleeding and decompensated cirrhosis. Endoscopy and biopsy revealed gastric ulcers with tetrad-shaped cocci consistent with Ss. After 32 days of hospitalization and broad-spectrum antibiotic therapy, both clinical and endoscopic improvement was observed. This case highlights the atypical presentation of this increasingly recognized infection and the importance of prompt diagnosis and supportive care.