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There is a well-defined, encapsulated lesion with mobile internal echoes in the region of interest. The lesion is in the subcutaneous plane and abuts skin. It shows a tiny hypoechoic track to the skin. There is a posterior acoustic enhancement. The lesion measures about 45 x 41 x 29 mm. There is a breach of the capsule at the caudal end of the lesion with an extralesional collection of about 17 x 12 x 10 mm. The adjacent subcutaneous fat and skin show oedema.