Small Intestinal and Mesenteric Multiple Gastrointestinal Stromal Tumors Causing Occult Bleeding

Area of Science:

• Gastroenterology
• Oncology
• Surgical Pathology

Background:

• Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract.
• Genetic mutations in C-Kit or platelet-derived growth factor receptor alpha polypeptide (PDGFRA) are implicated in GIST development.
• GISTs can occur anywhere along the gastrointestinal tract, presenting with diverse clinical manifestations.

Purpose of the Study:

• To present a case of multiple gastrointestinal stromal tumors (GISTs) involving the small intestine, omentum, and mesentery.
• To discuss the diagnostic challenges and therapeutic strategies for GISTs presenting as occult bleeding.
• To review the current understanding of GISTs' genetic basis and clinical management.

Main Methods:

• Case presentation of a 43-year-old male patient with occult gastrointestinal bleeding.
• Diagnostic workup including imaging and endoscopic procedures.
• Surgical resection and histopathological examination of multiple GISTs.
• Review of relevant literature on GIST diagnosis and treatment.

Main Results:

• The patient presented with occult bleeding attributed to multiple GISTs of varying sizes.
• Diagnostic modalities successfully identified the tumors in the small intestine, omentum, and mesentery.
• Surgical intervention was performed for management of the symptomatic GISTs.

Conclusions:

• Multiple GISTs can present insidiously with occult bleeding, posing diagnostic challenges.
• A multidisciplinary approach is crucial for the accurate diagnosis and effective management of GISTs.
• Understanding the genetic underpinnings of GISTs aids in targeted therapeutic strategies.