Solitary myocysticercosis of masseter muscle: A rare present
Published in the National Journal of Maxillofacial Surgery, the authors present a rare case of myocysticercosis involving the masseter muscle.

A 35-year-old male patient reported to with diffuse swelling over the left side of face for the last 2 months. The swelling was gradually increasing in size. On palpation, a soft, tender, compressible swelling measuring 3 cm × 4 cm extending over the left side of face was observed.

Blood investigations were within normal limit, except mild eosinophilia. Ultrasonography of the left side of face showed increased bulk of the left masseter muscle with heterogenous endotexture. A cystic lesion with an echogenic central round avascular structure was noted in the left masseter muscle.

Contrast-enhanced computed tomography revealed round hypodense nonenhancing lesion in the bulky left masseter muscle. Magnetic resonance imaging(MRI) revealed area altered of altered signal intensity with increase in bulk of the left masseter muscle. T1 image was iso-hypointense and T2 image was hyperintense. Small cystic lesion measuring 7 mm × 5 mm showing signal of fluid was also noted within the fibers of the left masseter muscle.

Small hypointense focus was also noted within the collection suggestive of calcification. Adjacent subcutaneous tissue edema with reactive enlargement of the left submandibular gland and reactive lymph nodes at Level Ib, II, and III on the left side were also noted. The radiological findings were suggestive of the left masseter myocysticercosis.

The patient was advised for tablet albendazole 400 mg twice daily for 28 days. After 4 weeks, the swelling resolved uneventfully. Ultrasonographic study revealed that the complete resolution of cystic lesion and masseter bulk was reduced. The patient is on regular follow-up with no recurrence noted in the last 1 year.

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