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 Indian J Med Microbiol  
 

Figure 8 (A-F): Rapidly-increasing (within a single day) claudication and pain of the left hip in a 15-year-old girl. There was no history of trauma. Nonsteroidal anti-inflammatory drug therapy was initiated early. Initial anteroposterior radiographs of the left hip (A) are normal. Doppler USG at day 3 (B) shows a lesion with a central hypoechoic area (star), a hyperechoic rim (arrow), and a third hypoechoic area (large arrow). Pulsed Doppler (C) shows perilesional vascularization with arterial spectrum. Axial T2W (D) and coronal T1W contrast enhanced MRI (E) at day 5 show an enhancing rim (large arrows), suggesting a zone phenomenon. Axial contrast enhanced CT scan at day 20 (F) shows plain homogenous enhancement of the lesion (arrow). Unenhanced CT images did not reveal any ossification. No ossification was observed during follow-up and the lesion eventually disappeared

Figure 8 (A-F): Rapidly-increasing (within a single day) claudication and pain of the left hip in a 15-year-old girl. There was no history of trauma. Nonsteroidal anti-inflammatory drug therapy was initiated early. Initial anteroposterior radiographs of the left hip (A) are normal. Doppler USG at day 3 (B) shows a lesion with a central hypoechoic area (star), a hyperechoic rim (arrow), and a third hypoechoic area (large arrow). Pulsed Doppler (C) shows perilesional vascularization with arterial spectrum. Axial T2W (D) and coronal T1W contrast enhanced MRI (E) at day 5 show an enhancing rim (large arrows), suggesting a zone phenomenon. Axial contrast enhanced CT scan at day 20 (F) shows plain homogenous enhancement of the lesion (arrow). Unenhanced CT images did not reveal any ossification. No ossification was observed during follow-up and the lesion eventually disappeared