Post injection myositis

Case contributed by Dr Maulik S Patel


H/o vaccination Injection in thigh - 5 days. C/o fever and local thigh pain - 1 day.

Patient Data

Age: 5 yrs
Gender: Male

An ill-defined area of vastus lateralis muscle belly shows hypoechoic echopattern, outward buldging of fibroadipose septa. 

No Floating echoes are noted.

Approximate Size

- Craniocaudal  - 6 cm

- Transverse  - 2.5 cm

- Anteroposterior  - 2 cm

Dopplar     - shows local hypervascularity .      


It does not abutt femur cortex. NO femur erosion / periosteal reaction is noted.

No extension is noted in to other muscle.

No thrombosis of femoral artery is noted.

Case Discussion

Findings favor post injection vastus lateralis myositis without abscess formation.

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Case information

rID: 30015
Published: 11th Jul 2014
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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