E1610. Beyond Peritoneal Reflections and Connections: A Pictorial Review of Inflammatory, Traumatic and Benign Neoplastic Peritoneal Pathology
  1. Emily Brady; NY-Presbyterian Hospital -Weill Cornell Medical Center
  2. Fernanda Mazzariol; NY-Presbyterian Hospital -Weill Cornell Medical Center
Frequently, benign peritoneal pathology can simulate malignancy. Attention to imaging features and clinical clues can help make the diagnosis of benign pathology. This exhibit will highlight key imaging features of benign pathology and discuss their clinical implication and treatment.

Educational Goals / Teaching Points
1. To discuss the cross-sectional imaging anatomy of the peritoneum, mesentery and retroperitoneum. 2. To discuss inflammatory and benign neoplastic peritoneal pathology which can simulate malignancy and review imaging features that can assist in differentiating the two. 3. To ease recognition of benign peritoneal pathology by correlating clinical presentation with imaging findings. 4. To outline clinical implications and treatment of benign peritoneal pathology.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Illustrated examples of the following pathology but not restricted to: Infection/inflammation with the following associated pathology: colitis, diverticulitis, enteritis, appendicitis, cholecystitis, Crohn’s disease, pancreatitis, scleroderma, pelvic inflammatory disease, dropped gallstones, endometriosis. Primary peritoneal infectious/inflammatory processes: Granulomatous peritonitis, sclerosing mesenteritis, abdominal cocoon. Fat based conditions: Epiploic appendagitis, mesenteric panniculitis, fat necrosis, omental infarct. Atypical infections: Tuberculosis, mesenteric adenitis, Echinococcosis. Tumor-like conditions: Inflammatory pseudotumor, Castleman disease, desmoid fibromatosis, gossypiboma, epidermoid cysts, extra-medullary hematopoiesis, hemangioma, splenosis. Peritoneal Cystic Lesions: Lymphangioma, mesothelial cysts, peritoneal inclusion cyst, benign cystic mesothelioma, duplication cysts. Trauma: Hematoma, mesenteric tear.

Familiarity with the spectrum of non-malignant peritoneal diseases, their clinical implications and treatment will help the radiologist provide an accurate diagnosis and facilitate management.