Patients with SBO after distal gastric bypass may present with vague complaints and confusing laboratory and non-specific findings on x-rays. Delayed diagnosis can have catastrophic consequences. CT imaging with oral and intravenous contrast can be life-saving, and should be obtained in all gastric bypass patients with abdominal pain, particularly when all other parameters seem "normal". Unexplained abdominal pain should prompt exploration.

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Lap-Band patients with sudden nausea, vomiting and abdominal pain, when not relieved by emptying the band, should undergo a CT scan. If a traditional slippage is not confirmed, paragastric Richter's hernia of the stomach through the band should be suspected. Immediate exploration with reduction of the stomach and closure of the defect can salvage the stomach and the band. Gastro-gastric sutures must completely close the space underneath the band to prevent this complication.

Reversal of obesity following bariatric surgery does not eliminate risk for RCC. Preoperative and annual postoperative ultrasonography may be useful in identifying early stage RCC. Lesions that are not pure cysts must be evaluated with CT scans or MRI. Nephrectomy may be curative.