Sealed-off perforation.

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This video shows Sealed-off perforation.
Close tightly or barricade to prevent entry or exit. For example, We're sealing off the unused wing of the building, or The jar is tightly sealed up. Dating from the first half of the 1900s, this idiom uses a seal in the sense of “close securely,” as one used to do with a seal of wax.
We defined sealed-off perforation as a colon perforation with localized abscess identified on operative, computed tomography, or pathologic findings, with no evidence of free perforation, including fecal contamination and dirty fluid collection in the peritoneal cavity.
The primary symptoms of gastrointestinal perforation are severe abdominal pain and tenderness. The abdomen may also protrude or feel hard to the touch. If the hole is in a person's stomach or small intestine, the onset of pain is usually sudden, but if the hole is in the large bowel, the pain may come on gradually.
Bowel perforation is an acute surgical emergency where there is a release of gastric or intestinal contents into the peritoneal space.
Treatment most often involves emergency surgery to repair the hole. Sometimes, a small part of the intestine must be removed. One end of the intestine may be brought out through an opening (stoma) made in the abdominal wall. This is called a colostomy or ileostomy.
What is Sealed perforation?
Perforations are the second most common complication of peptic ulcer disease. They very often occur on the anterior wall of the duodenum or stomach. Posterior perforations are rare and are sometimes revealed by sub-phrenic abscesses. They are exceptionally sealed at the moment of the abscess diagnosis.
Symptoms of a perforated ulcer may include:
Sudden, severe pain in the belly (abdomen)
Pain spreading to the back or shoulder.
Upset stomach (nausea) or vomiting.
Lack of appetite.
Swollen belly.
However, complications of peptic ulcer disease either bleeding or perforation still frequently require surgical intervention. Although bleeding peptic ulcers can usually be treated with non-surgical means, 5–10% will require emergent surgery for hemostasis.
Any subphrenic abscess of unknown origin must lead to a systematic biochemical and bacterial analysis of drainage fluid. The presence of lipase in the drainage fluid suggests a gastrointestinal tract perforation in absence of acute and severe pancreatitis symptoms, a call for water-soluble contrast imaging study looking for contrast leaking through the perforated duodenum. The absence of contrast leakage suggests that the perforation is sealed and requires a careful upper digestive tract endoscopy to confirm it. The treatment of a subphrenic abscess is that of any intra-abdominal abscesses. The treatment of sealed perforated ulcers is nonoperative.
Typically, you will take antibiotics along with acid-suppressing medicine for two weeks. Then you may take acid-suppressing medication for another four to eight weeks. Gastric ulcers tend to heal more slowly than duodenal ulcers. Uncomplicated gastric ulcers take up to two or three months to heal completely.