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[Gastric schwannoma]
M Cafferati1, L Roberti, T Ghersi
1Reparto di Chirurgia Generale, Ospedale S. Lorenzo, Carmagnola, Torino.
Minerva Chirurgica
|July 1, 1997
Summary
This report details a rare gastric schwannoma case. Postoperative histology confirmed the benign tumor, highlighting the need for surgical resection due to malignant potential.
Area of Science:
- Gastroenterology
- Surgical Pathology
- Oncology
Background:
- Schwannomas are rare tumors originating from Schwann cells, often found in the gastrointestinal tract.
- Gastric schwannomas, though uncommon, represent a subset of gastrointestinal stromal tumors (GIST) and can present diagnostic challenges.
- Association with genetic syndromes like Von Recklinghausen's disease (neurofibromatosis type 1) is noted in some schwannoma cases.
Observation:
- A 36-year-old woman presented with a gastric tumor identified via endoscopy.
- Initial biopsy suggested leiomyoma, necessitating further investigation.
- Postoperative histological examination definitively diagnosed a benign gastric schwannoma.
Findings:
- Immunohistochemical staining confirmed the diagnosis, showing positivity for S-100 protein and neuron-specific enolase.
- Gastric schwannomas, like other gastrointestinal schwannomas, can be associated with bleeding.
- These tumors constitute approximately 24% of all GIST and 4% of primary retroperitoneal tumors.
Implications:
- Accurate diagnosis of gastric schwannoma is crucial, as initial biopsies may be misleading.
- Surgical resection is recommended due to the potential for malignant transformation.
- Understanding the immunohistochemical profile aids in differentiating schwannomas from other mesenchymal tumors.