Patient presents with complaints consistent with possible mesenteric panniculitis.  Symptoms include chronic or intermittent abdominal pain, often described as dull, cramping, or colicky, sometimes accompanied by nausea, vomiting, diarrhea, constipation, and unexplained weight loss.  Physical examination may reveal tenderness or a palpable mass in the abdomen.  Differential diagnoses considered include inflammatory bowel disease, lymphoma, peritoneal carcinomatosis, and other causes of abdominal pain.  Imaging studies, including CT scan of the abdomen and pelvis with intravenous contrast, demonstrate findings characteristic of mesenteric panniculitis, such as fat ring sign, increased mesenteric density, and misty mesentery.  Laboratory tests, including complete blood count, comprehensive metabolic panel, inflammatory markers (ESR, CRP), and fecal occult blood test, were performed to rule out other conditions and assess disease activity.  Biopsy, though considered the gold standard for diagnosis, was not pursued at this time due to potential risks and the characteristic radiographic findings.  The patient's presentation, imaging findings, and laboratory results suggest a diagnosis of mesenteric panniculitis.  Treatment plan includes symptomatic management with pain control using analgesics or nonsteroidal anti-inflammatory drugs.  Patient education regarding the chronic nature of the disease and potential complications was provided.  Follow-up imaging will be scheduled to monitor disease progression and evaluate treatment response.  Patient will be monitored for any changes in symptoms and instructed to return for further evaluation if necessary.  ICD-10 code K75.3 (other peritonitis) and relevant CPT codes for the evaluation and management services provided were documented.