case_images: PMC11823886_01
case_images: Comparison between the affected limb (left limb) and the contralateral. Clinical examination at the time of the first evaluation, revealing thigh muscle atrophy, decreased strength in the left lower limb, and progressive loss of weight-bearing capacity, with 1-month symptomatic onset.
case_images: JOCR-15-136-g001.jpg
case_images: PMC11823886_01_JOCR-15-136-g001.jpg
case_images: F1
case_images: A 16-year-old Caucasian male with no significant medical history presented with a 1-month history of thigh muscle atrophy, decreased strength in the left lower limb, and progressive loss of weight-bearing capacity (Fig. 1).
case_images: (A) Axial STIR-weighted magnetic resonance imaging images of the pelvis at the moment of diagnosis and (B) 6 months follow-up. On the initial scan, a fusiform-shaped image is observed, deep into the left iliacus muscle, situated between this muscle and the ilium bone itself, with no contrast enhancement after contrast administration. These findings were suggestive of encapsulated hematoma, measuring 48 x 14 x 52 mm, as well as an atrophy of the left psoas, iliacus, and vastus lateralis muscles. At 6 months, the hematoma is shown to have shrunk, measuring 33 x 28 x 47 m. The surrounding muscle trophism is also shown to have improved while muscle edema is also shown to have disappeared.
case_images: JOCR-15-136-g002.jpg
case_images: PMC11823886_01_JOCR-15-136-g002.jpg
case_images: F2
case_images: In addition, atrophy of the thigh musculature, as well as the psoas and iliac muscles, was observed (Fig. 2a). A follow-up MRI showed a reduction in the size of the hematoma (Fig. 2b).