J Korean Assoc Oral Maxillofac Surg.  2010 Oct;36(5):423-426.

Intramuscular hemangioma formation in the masseter muscle: a case report

• Kim HW
• Kil TJ
• Choi JM
• Nam W
• Cha IH
• Kim HJ

Abstract

Hemangioma is a benign vascular proliferation. Intramuscular hemangiomas are rare, accounting for less than 1% of all hemangiomas, and occur normally in the trunk and extremities. Approximately 10-20% of intramuscular hemangiomas are found in the head and neck region, most often in the masseter muscles. The typical clinical characteristic is a painful soft tissue mass without cutaneous changes. The suggested treatment is a surgical excision. We report a case of an intramuscular hemagnioma of the masseter muscle. The patient was a 56 year old male who visited our clinic complaining of left facial swelling after 2 years of follow up at a different clinic. After magnetic resonance imaging (MRI), the mass was excised under general anesthesia. The biopsy revealed the mass to be an intramuscular hemangioma. We report the clinical and pathological characteristics as well as the treatment of a case of an intramuscular hemangioma of the masseter muscle.

Keyword

Intramuscular hemangioma; Hemangioma; Masseter muscle

MeSH Terms

Accounting
Anesthesia, General
Biopsy
Extremities
Follow-Up Studies
Head
Hemangioma
Humans
Magnetic Resonance Imaging
Male
Masseter Muscle
Neck

Figure

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  Fig. 1. Preoperative magnetic resonance imaging (MRI) shows 3.3 cm size, soft issue mass at Lt. masticatory space. The mass shows intermediate signal on T2WI and strong enhancement. It is embedded in anterior side of Lt. masseter muscle with no bony invasion. A is the T1 weighted MRI, B is the enhanced T1 weighted MRI, and C is the T2 weighted MRI.

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  Fig. 2. Magnetic resonance imaging (MRI) of postoperative 3 months shows small residual lesion on anterior position of Lt. masseter muscle. A is the T1 weighted MRI, B is the enhanced T1 weighted MRI, and C is the T2 weighted MRI.

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  Fig. 3. Magnetic resonance imaging (MRI) of postoperative 12 months shows residual lesion on Lt. masticator space with localizing and decreasing in size. A is the T1 weighted MRI, B is the enhanced T1 weighted MRI, and C is the T2 weighted MRI.

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  Fig. 4. Main mass is measured 4.5×3.5×4.0 cm.

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  Fig. 5. A. Microscopic examination demonstrates multiple muscles (H & E staining, original magnificationx 40), B. Microscopic examination demonstrates many vessels inside muscles (H & E staining, original magnificationx 200).

Reference

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