multifokale Osteonekrose

A case of

completed course multifocal osteonecrosis (MFON) during pregnancy due to primary antiphospholipid syndrome. MRI of both hips revealed abnormal signals in the superior-antero-medial portion of both femoral heads and inferiorly to the intertrochanteric region which are well demarcated from the adjacent normal bone by a thin rim of low signal material in both T1 and T2 WI with fluid between the fragment and the bone. T2 WI revealed the typical double line sign which is considered pathognomonic for avascular necrosis with evidence of subchondral fissuring and relative cortical irregularities with no evidence of structural collapse. Conclusion: bilateral stage III femoral head avascular necrosis

A case of

completed course multifocal osteonecrosis (MFON) during pregnancy due to primary antiphospholipid syndrome. MRI of both shoulders revealed abnormal signals in the right humeral head involving the superior-posterior aspect which are well demarcated from the adjacent normal bony by a thin rim of low signal material in both T1 and T2 WI. No evidence of structural collapse with marrow edema showing high signal with fat sat sequence. Conclusion: grade II AVN of the right humeral head and grade I AVN of the left humeral head with minimal joint effusion