Post injection abscess - thigh

Case contributed by Maulik S Patel
Diagnosis almost certain


Anterior thigh region vaccination injection one month back. Presented with injection site swelling.

Patient Data

Age: about 2 yrs
Gender: Female

An encapsulated collection with mobile low-level internal echoes at the site of the swelling. Located in the subcutaneous plane, close to the fascia. Thin wall (1 - 1.5 mm) around the collection. No internal septa/ vascularity. Echogenic perilesional subcutaneous fat. A non-thrombosed subcutaneous vein deep to the lesion. Normal underlying muscles.

Case Discussion

Findings of post-vaccination subcutaneous abscess of the thigh. Surgery revealed an abscess.

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