Intramuscular haemangioma

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Painless swelling of the posterior aspect of the right upper leg.

Patient Data

Age: 20 years
Gender: Female
mri
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Axial
T1
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Coronal
STIR
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Coronal
T1
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Axial
STIR
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Axial
T2
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Axial
Gradient Echo
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Axial T1
fat sat
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Axial T1 C+ fat
sat dynamic
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Coronal T1
C+ fat sat
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Sagittal T1
C+ fat sat
This study is a stack
Axial T1
C+ fat sat
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Info

Well-circumscribed lobulated intramuscular soft tissue mass within the soleus muscle, isointense to muscles on T1, hyperintense on T2 and STIR, containing fluid-fluid levels of blood products as well as calcifications (Phleboliths) of low signal. The postcontrast sequences show progressive and heterogeneous enhancement. Normal thickness and signal intensity of the adjacent fibular cortex. Normal appearance of the surrounding muscles.

Case Discussion

MRI features most consistent with an intramuscular haemangioma.

Intramuscular haemangiomas, also known as intramuscular angiomas or intramuscular capillary-type haemangiomas, are rare intramuscular vascular lesions consisting of benign vascular channels within skeletal muscle. There is a peak in diagnosis in young adults and adolescents.

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