case_images: PMC11813699_01
case_images: Clinical presentation of the patient with a subcutaneous hemangioma located on the right thigh and knee.
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case_images: This case report details the hematological and radiological findings in a 44-day female patient diagnosed with a subcutaneous hemangioma located in the right thigh and knee (Figure 1).
case_images: Dermoscopic images of the lesion. Black triangles: Red-white homogeneous area; blue triangles: "white rail" lines; white arrows: Linear vessels.
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case_images: Figure 2 presents dermatologic findings of the lesion, which collectively showed dense capillary structures with fibrotic changes.
case_images: MRI Imaging of Subcutaneous Hemangioma in the Right Thigh and Knee. The white arrow indicates the lesion observed. A: Axial T1-weighted MRI without contrast, showing a hyposignal lesion in the right thigh. B: Axial T2-weighted fat-saturated MRI with contrast, demonstrating enhancement of the lesion. C: Magnetic Resonance Angiography (MRA) in the sagittal plane, which shows feeding arteries. Signal void areas indicate high flow in the lesion. D: Sagittal T2-weighted MRI with contrast, which shows hyperintensity within the lesion and its infiltration into the underlying quadriceps muscles.
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case_images: PMC11813699_01_CCR3-13-e70143-g001.jpg
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case_images: T2 hyperintensity, with multiple peripheral signal void structures consistent with vascular channels typical of hemangioma. The mass also exhibited infiltration into the underlying quadriceps muscles (Figure 3). These findings resembled kaposiform hemangioendothelioma (KHE), which is recognized as an aggressive form of vascular tumor typically occurring during infancy and is associated with significant morbidity due to its invasive nature.