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Diagnostic ultrasound ( PDFDrive )

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1944 PART V Pediatric Sonography

Left

LNG_

Femur

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B

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Left

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r

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FIG. 56.1 Multimodality Interventional Procedure Guidance. Biopsy of posterior femur cortical aneurysmal bone cyst in a 15-year-old

with 3 months of left thigh pain initially treated as a knee sports injury. (A) Transverse short-tau inversion recovery (STIR) magnetic resonance

image mid left femur. Black arrows show eroded posterior bone cortex. White arrows show luid-luid levels. (B) Longitudinal ultrasound showing

the soft tissue component of the lesion (black arrows). (C) Color Doppler showed little internal blood low, but (D) moderate-size peripheral arterial

vessels were identiied and avoided during the biopsy. (E) Axial cone-beam computed tomography scan showing initial guidance graticule and bone

biopsy device entering the posterior bone cortex to obtain initial soft tissue samples for frozen section analysis to minimize the risk of more

aggressive biopsy of a malignant lesion. Frozen section revealed a benign lesion. (F) Conventional luoroscopy then allowed further sampling from

all quadrants of the lesion.

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