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Insights into Imaging
Fig. 7 | Insights into Imaging

Fig. 7

From: Osteoid osteoma: the great mimicker

Fig. 7

Subchondral osteoid osteoma mimicking trochlear chondromalacia. A 35-year-old male with anterior knee pain for 4 months. Axial T2 FS MR images (a) showed deep chondral erosion (arrow), subchondral edema (asterisk) and a small, low signal intensity foci that could be a nidus (dashed arrow). Sagittal T1 MRI (b) and CT (c) confirmed the diagnosis of the OO nidus (dashed arrow). Surgical images before (d) and after (e) resection

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