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Case Reports
. 2015 Jul-Sep;5(3):15-7.
doi: 10.13107/jocr.2250-0685.296.

A Rare Case Of Non Traumatic Myositis Ossificans Circumscripta

Yashwant J Mahale  1 , Chaitanya S Vyawahare  2 , Nandkishore V Dravid  1 , Aditya Upase  3 , Romil Rathi  4
Affiliations
Case Reports

A Rare Case Of Non Traumatic Myositis Ossificans Circumscripta

Yashwant J Mahale et al. J Orthop Case Rep. 2015 Jul-Sep.

Abstract

Introduction: Myositis ossificans circumscripta is a benign non neoplastic ossifying tumor presenting with bone like osteoid tissue extraskelletaly amidst the muscle planes. This condition when not associated with trauma is very trivial and considering the way it mimics certain characteristics, it may be misunderstood as a malignant neoplasm, abscess or antibioma. The aetiology of this atraumatic condition is still indistinct and remains a question unsolved. We would like to report such a case with distinctly unusual presentation that occurred in our institute. Thereby help in understanding the characteristics of the tumor and associated problems in the diagnoses and treatment.

Case report: We report a case of 18 year old male presenting with acute onset severe pain in right gluteal region and associated swelling with no history of trauma. All possible investigations including haematological work up, Radiographs, Ultrasonography, aspiration and Magnetic resonance imaging proved to be inconclusive. Open excision and histopathology revealed the condition as myositis ossificans.

Conclusion: Our report is aimed towards understanding the difficulty in diagnosing atraumatic myositis ossificans circumscripta and aid in understanding the possible aetiology of unusual presentation without history of trauma.

Keywords: Atraumatic myositis ossificans circumscripta; extra skeletal osteoid tissue; right gluteal region.

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Conflict of interest statement

Conflict of Interest: Nil

Figures

Figure 1
Figure 1
Radiograph AP view
Figure 2
Figure 2
Radiograph Lateral view
Figure 3
Figure 3
Ultrasonography showing solid linear calcified mass
Figure 4
Figure 4
MRI Rt Hip showing loculated collection
Figure 5
Figure 5
Intra-operatively observed bony tissue in gluteal muscle plane
Figure 6
Figure 6
Post operative scar showing line of incision
Figure 7
Figure 7
Gross pathological appearance
Figure 8
Figure 8
Microscopic appearance
Figure 9
Figure 9
Microscopic appearance
See this image and copyright information in PMC

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References

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