An uncommon cause of intestinal obstruction: Vanek's tumor.

Vanek's tumor, also known as Inflammatory Fibroid Polyp (IFP), is a rare submucosal mesenchymal lesion with spindle cells and eosinophilic infiltration. Its etiology is unknown but linked to chronic cellular damage. IFP can develop in various gastrointestinal segments, most commonly in the gastric antrum (70%), small intestine (18-20%), colon, and rectum (4-7%). IFP are usually symptomless and are often found incidentally during colonoscopies or gastroscopies. Most cases can be treated with simple endoscopic resection. In rare cases where larger lesions over 1 cm are identified through endoscopic ultrasound without deeper layer involvement, submucosal endoscopic dissection can be done with good outcomes and minimal risk. Some polyps may cause dyspeptic, hemorrhagic, or obstructive symptoms based on size and location. We report a case of a 56-year-old patient with a 24-hour history of obstructive symptoms, including bowel cessation and vomiting. The patient also had abdominal pain and gradual weight loss over the past two months. Notably, the patient had a prior diagnosis of Crohn's disease 12 years ago, without treatment or continuous medical monitoring.