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Updated: Jun 15, 2025
Direct Mouse Trauma/Burn Model of Heterotopic Ossification
Published on: August 6, 2015
Fatal Moans and Bones in Crohn's: A Case of Heterotopic Mesenteric Ossification
Joyce Opara, Heather Jarrell1, Nicole R Jackson
1New Mexico Office of the Medical Investigator, Albuquerque, NM.
Abstract:
Heterotopic mesenteric ossification (HMO) represents a rare reactive condition characterized by abnormal bone formation within the mesentery. HMO's etiology remains enigmatic, with proposed triggers including trauma-induced metaplasia or bone fragment dislodgment from other sites during abdominal surgery. With fewer than 100 documented cases in the literature, much about this condition remains unknown. In this report, we present a notable case of HMO in a 43-year-old man with a history of severe Crohn's disease and multiple abdominal surgeries. Following a period of unresponsiveness at home, he was admitted to the intensive care unit, where he received palliative care due to a poor prognosis. An autopsy revealed mature, benign bone fragments within the mesentery, alongside severe dehydration, likely exacerbated by decreased oral intake and medication cessation related to his ostomy. Although antemortem imaging revealed HMO, it was misattributed to contrast versus calcification. This case underscores the importance of clinician awareness regarding HMO, particularly its potential implications in inflammatory bowel disease. Early recognition and interdisciplinary collaboration among radiologists, pathologists, and clinicians are paramount in optimizing patient outcomes. Further research is warranted to elucidate this intriguing pathology's pathogenesis and best management strategies.
Insights
Heterotopic mesenteric ossification (HMO) is a rare condition of abnormal bone formation in the mesentery. This case highlights HMO
Area of Science:
- Gastroenterology
- Pathology
- Radiology
Background:
- Heterotopic mesenteric ossification (HMO) is a rare reactive condition involving abnormal bone formation within the mesentery.
- Its etiology is poorly understood, with theories suggesting trauma-induced metaplasia or surgical bone fragment dislodgment.
- Fewer than 100 cases are documented, indicating a significant knowledge gap regarding this pathology.
Purpose of the Study:
- To present a unique case of Heterotopic Mesenteric Ossification (HMO).
- To discuss the diagnostic challenges and implications of HMO in patients with inflammatory bowel disease.
- To emphasize the need for increased clinician awareness and interdisciplinary collaboration for improved patient outcomes.
Main Methods:
- Case report of a 43-year-old male with severe Crohn's disease and multiple abdominal surgeries.
- Clinical presentation, intensive care unit admission, and palliative care.
- Autopsy findings revealing mesenteric bone fragments; review of antemortem imaging.
Main Results:
- Autopsy confirmed mature, benign bone fragments in the mesentery, consistent with Heterotopic Mesenteric Ossification (HMO).
- Antemortem imaging suggested HMO but was misinterpreted as contrast or calcification.
- The patient experienced severe dehydration, likely due to decreased oral intake and ostomy-related medication cessation.
Conclusions:
- This case highlights the importance of recognizing Heterotopic Mesenteric Ossification (HMO), especially in patients with inflammatory bowel disease.
- Misinterpretation of imaging findings can delay diagnosis.
- Early recognition and collaborative efforts among radiologists, pathologists, and clinicians are crucial for managing HMO and improving patient outcomes.
