2015 HSC Section 1 Book of Articles

A. Tekes et al. / Clinical Radiology 69 (2014) 443 e 457

Figure 10 A 4-year-old with hemihypertrophy of left lower extremity, CM, VM, and LM in left lower extremity. Post-surgical resection of lower leg microcystic LM. Note pelvic involvement with perineal swelling. (b) Axial T2-weighted image with fat saturation shows multiple cysts with fl uid e fl uid levels noted deep in the pelvis. (c) Axial post-contrast T1-weighted image demonstrates lack of contrast enhancement in the cysts con fi rming that these represent LMs. (d e e) Coronal T2-weighted image with fat saturation shows increased thickness of the subcutaneous fat in the left thigh (d). Note in fi ltration of the subcutaneous fat, and muscle groups by the VM that shows heterogeneous enhancement on coronal contrast-enhanced T1-weighted images (e). Also note the enlarged/patolous deep venous system.

consistent with VaMs, that is, congenital errors in vascular development. Although they are present at birth, they may remain dormant and present in later childhood, or adult life. Histological evaluation of these lesions supports this

classi fi cation, with the types of malformations delineated by the basic type of constituent vessel and the presence or absence of arteriovenous shunting. They demonstrate vascular spaces lined with fl at, mature epithelium that is

Figure 11 (a) An 11-year-old female patient with LVM of the tongue, status post-tongue reduction surgery and prior laser treatment. Recurrence of the blue e black small numerous tiny cystic lesions on her tongue. They weep clear lymphatic as well as bloody fl uid. (b e c) Sagittal T2 Weighted image of the tongue shows increased T2 signal in the intrinsic tongue muscles, that show mild enhancement in contrast-enhanced T1- weighted sagittal image (c). MRI is helpful in identifying the depth of in fi ltration in this super fi cial lesion.

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