Patient with Progressively Worsening Abdominal Distention and Pain

Patient with progressively worsening abdominal distention and pain

A 69-year-old woman presented to the emergency department with a 3-day history of progressively worsening abdominal distention and pain. She was taking dexamethasone for cerebral edema associated with glioblastoma multiforme.

What’s the Diagnosis?