Congenital peritoneal encapsulation: A review and novel classification system

Area of Science:

• Gastroenterology
• Surgical Pathology
• Developmental Biology

Background:

• Congenital peritoneal encapsulation (CPE) is a rare congenital anomaly characterized by an accessory peritoneal membrane encasing the small bowel.
• Its etiology is poorly understood, possibly arising from aberrant adhesions during fetal mid-gut development.
• Limited case reports and lack of systematic reviews contribute to its underdiagnosis and mismanagement.

Purpose of the Study:

• To review the current literature on the etiology, diagnosis, and treatment of CPE.
• To introduce a novel classification system for encapsulating bowel diseases.
• To differentiate CPE from similar conditions like abdominal cocoon and encapsulating peritoneal sclerosis.

Main Methods:

• Systematic literature review of congenital peritoneal encapsulation.
• Analysis of diagnostic modalities including clinical presentation, imaging (CT scan), and laparoscopy.
• Review of management strategies involving medical stabilization and surgical intervention (laparotomy, peritonectomy, adhesiolysis).

Main Results:

• CPE diagnosis is primarily clinical, supported by imaging and laparoscopy.
• Abdominal pain due to subacute bowel obstruction is the most common presentation (two-thirds of patients).
• Computed tomography detects CPE in only 40% of cases; diagnosis often requires laparotomy.

Conclusions:

• Prompt surgical management of CPE leads to an excellent prognosis with most patients becoming symptom-free.
• A new classification system may aid in distinguishing CPE from other encapsulating bowel diseases.
• Further research is needed to elucidate the etiology and improve diagnostic accuracy for CPE.