Juvenile dermatomyositis (JDM)

Case contributed by Luis Valdivieso

Presentation

Weakness, swelling and stiffness of the left knee for two years

Patient Data

Age: 15 years
Gender: Female
X-ray

Extensive muscular and subcutaneous dystrophic calcifications most prominent in the left lateral thigh.

Ultrasound

Hyperechoic areas with posterior acoustic shadow projection at the subcutaneous-muscular plane level associated with slight perilesional edema.

Case Discussion

In addition to the clinical and imaging data, the diagnosis was confirmed with a histopathological examination of subcutaneous tissue, which reported ossification accompanied by a mild mononuclear infiltrate.

Although this case represents an isolated radiological finding in striated muscle and left muscle skin (circumscribed calcinosis), under the clinical context, systemic pathology (dermatomyositis) should be considered, which can affect other regions and organs, especially the lungs.

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Case information

rID: 79218
Published: 24th Jun 2020
Last edited: 25th Jun 2020
Inclusion in quiz mode: Included
Institution: caja nacional de salud cbba

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