Clin Orthop Surg.  2010 Sep;2(3):191-194. 10.4055/cios.2010.2.3.191.

Calcific Myonecrosis of the Antetibial Area

• Chun YS
• Shim HS

• KMID: 999440
• DOI: http://doi.org/10.4055/cios.2010.2.3.191

Abstract

Calcific myonecrosis is a rare late post-traumatic condition, in which a single muscle is replaced by a fusiform mass with central liquefaction and peripheral calcification. Compartment syndrome is suggested to be the underlying cause. The resulting mass may expand with time due to recurrent intralesional hemorrhage into the chronic calcified mass. A diagnosis may be difficult due to the long time between the original trauma and the symptoms of calcific myonecrosis. We encountered a 53-year-old male patient diagnosed with calcific myonecrosis in the lower leg. We report the case with a review of the relevant literature.

Keyword

Lower leg; Soft tissue mass; Calcific myonecrosis

MeSH Terms

Calcinosis/*diagnosis/etiology/pathology
Compartment Syndromes/complications
Humans
*Leg
Male
Middle Aged
Muscle, Skeletal/pathology
Muscular Diseases/*diagnosis/etiology/surgery
Necrosis

Figure

• 

  Fig. 1 Anteroposterior (A) and lateral (B) radiographs show a fusiform mass overlying the anterior compartment without an erosion of the tibia.

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  Fig. 2 Magnetic resonance images show low signal intensity in the tibialis anterior muscle.

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  Fig. 3 The cross section of the excised mass revealing a large cystic cavity with skeletal muscle replaced by calcified material and fibrotic capsule.

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  Fig. 4 Histologic examination shows an extensive amorphous pink substance with calcific material and some granular inflammatory reaction due to necrosis of the skeletal muscle and fibrin (Hematoxylin and eosin stain, ×100).

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