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Updated: Jul 10, 2026

Laparoscopy-endoscopy Cooperative Surgery for the Treatment of Gastric Gastrointestinal Stromal Tumors
Published on: February 19, 2022
Gastric GISTs. Personal experience
Giuseppe Pietro Mingolla1, Paolo Antonino Riccio, Romano Linguerri
1Unità Operativa di Chirurgia Generale, AUSL Imola, Imola, Italy. pieromingolla@libero.it
Background:
With term GIST is now defined a group of mesenchimal tumours of the gastrointestinal tract expressing immunopositivity for kit protein kinase (CD117). Surgical therapy remains the gold standard for these rare tumours. Imatinib Mesylate (STI-571) is a potent inhibitor of Kit Kinase activity and different reports demonstrated its efficacy in unresectable or metastatic Gists.
Aim Of The Paper:
To value the incidence of GISTs among gastric mesenchimal neoplasms and analyzed their clinical presentation, prognostic parameters and surgical treatment. The response to Imatinib Mesylate in a case of metastatic GIST is then valued.
Methods:
Twelve cases of gastric mesenchimal neoplasms are retrospectively reviewed and tested by CD117 immmunopositivity identifyng 8 GISTs. The median follow-up was 37 (range7-120) months. We describe in details the case of a metastatic Gist treated for 15 months with Imatinib Mesylate.
Results:
The 67 per cent of mesenchimal gastric tumours were CD117+. Gastrointestinal bleeding was the most common presenting symptom. The 50% of patiens with malignant GISTS had a palpable abdominal mass at diagnosis. All tumors < 5 cm in diameter had a mitotic count (MC) <5/50 high-power fields (HPFs) except a case of high grade leiomyosarcoma. Surgical therapy was complete tumour resection with free margins. No recurrence was observed in lesions <5cm and < 5 mitosis/50 High Power Fields (HPFs). A good response to Imatinib Mesylate was reported in a metastatic GIST.
Conclusion:
The surgeon's role in gastric Gist's treatment is to achieve a complete cancer resection with free margins. In advanced lesions, even in presence of hepatic metastases, surgical resection of the mass is indicated because is possible to obtain a stabilization or a partial remission with Imatinib Mesylate palliative treatment in some patients.
Insights
Gastrointestinal stromal tumors (GISTs) are rare mesenchymal neoplasms. Surgical resection is key for localized GISTs, while Imatinib Mesylate shows promise for metastatic disease.
Area of Science:
- Gastroenterology and Surgical Oncology
- Molecular Targeted Therapy
Background:
- Gastrointestinal stromal tumors (GISTs) are defined by CD117 immunopositivity.
- Surgery is the primary treatment for GISTs.
- Imatinib Mesylate is effective for unresectable or metastatic GISTs.
Observation:
- This study reviewed 12 gastric mesenchymal neoplasms, identifying 8 GISTs (67%) via CD117.
- The median follow-up was 37 months.
- A case of metastatic GIST treated with Imatinib Mesylate for 15 months is detailed.
Findings:
- Gastrointestinal bleeding was the most common symptom.
- Malignant GISTs >5cm or with high mitotic counts require careful management.
- Complete surgical resection with clear margins prevented recurrence in localized GISTs.
- Imatinib Mesylate demonstrated a positive response in a metastatic GIST case.
Implications:
- Complete surgical resection remains crucial for gastric GISTs.
- Surgical intervention is advised for advanced GISTs, even with metastases, to facilitate palliative Imatinib Mesylate treatment.
- Imatinib Mesylate can stabilize or induce partial remission in advanced GIST patients.
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