Clinical Report: Benign Colonic Schwannoma Exhibiting Restricted Diffusion

Overview

This case study presents a benign colonic schwannoma that exhibited imaging characteristics including restricted diffusion on MRI and prominent mesocolic lymphadenopathy. The definitive diagnosis was established post-surgery through histopathological examination.

Background

Colonic schwannomas are rare benign tumors that can mimic malignant lesions, complicating preoperative diagnosis. Their imaging features, such as restricted diffusion and lymphadenopathy, may lead to misinterpretation as malignancy.

Data Highlights

No numerical or trial data available in the article.

Key Findings

• A 43-year-old woman presented with abdominal pain and altered bowel habits.
• Colonoscopy revealed a large submucosal mass in the transverse colon.
• Imaging showed pronounced restricted diffusion and enlarged mesocolic lymph nodes.
• Histopathology confirmed the diagnosis of benign gastrointestinal schwannoma.
• All harvested mesocolic lymph nodes showed reactive hyperplasia without metastasis.

Clinical Implications

Definitive diagnosis relies on histopathological examination following surgical intervention.

Conclusion

Benign colonic schwannomas can present with imaging characteristics that suggest malignancy.

Related Resources & Content

1. Frontiers in Oncology, 2026 -- Case Report: Spectral CT characterization of giant esophageal schwannoma with reactive lymphoid hyperplasia mimicking lymphoproliferative disease
2. Pediatric Inflammatory Myofibroblastic Tumors of the Colon: Clinical Features, Treatment Approaches, and Outcomes—A Case Study with a Comprehensive Literature Review
3. Management of Gastrointestinal Schwannomas: A State-of-the-Art Review - PMC
4. Schwannoma of the colon and rectum: a systematic literature review
5. Acta Neuropathologica — Diagnostic Challenges in Oligodendroglial Tumors Exhibiting Ganglioglioma-like Features
6. Frontiers in Oncology — Malignant peripheral nerve sheath tumor of the ileocecal region: a case report
7. Management of Gastrointestinal Schwannomas: A State-of-the-Art Review - PMC
8. Gastrointestinal schwannomas: A case series of 9 patients and literature review - Turkish Journal of Surgery
9. Schwannoma of the colon and rectum: a systematic literature review
10. Perilesional Lymph Node Swelling Might be a Radiologic Clue for Appendiceal Schwannoma: A Case Report - PMC
11. Frontiers | Case Report: Crohn’s disease with coexisting mesenteric schwannoma
12. 46 CLINICAL GUIDELINES None | |