Vassalou Evangelia E, Dimitriou Rozalia, Perdikogianni Chryssoula, Raissaki Maria
Department of Medical Imaging, University Hospital of Heraklion, Stavrakia Voutes, Heraklion, Crete, 71110, Greece.
Department of Orthopaedics, University Hospital of Heraklion, Heraklion, Greece.
Pediatr Radiol. 2025 Aug;55(9):1947-1951. doi: 10.1007/s00247-025-06339-7. Epub 2025 Jul 21.
We describe a case of a 7.5-year-old boy with a 7-week history of recurrent right knee swelling despite joint aspiration, persisting limping, and mild motion restriction, following a minor injury. Initial magnetic resonance imaging (MRI), ultrasound, and joint fluid analysis yielded non-specific synovitis. The child was investigated for juvenile idiopathic arthritis (JIA) and referred for a repeat MRI. Questioning by the attending radiologist disclosed falling onto wood sticks 10 weeks previously. Florid enhancing synovitis, prominent popliteal lymph nodes, and a linear foreign body were identified and ultrasonographically confirmed. During the operation, a 3-cm wooden splinter was successfully removed. This case highlights the uncommon challenge of differentiating between JIA and foreign body-induced synovitis and emphasizes the importance of detailed history by the radiologist and meticulous imaging techniques.
我们描述了一例7.5岁男孩的病例，该男孩在一次轻微受伤后，尽管进行了关节穿刺，但右膝反复肿胀7周，持续跛行且活动轻度受限。最初的磁共振成像（MRI）、超声和关节液分析显示为非特异性滑膜炎。该患儿接受了青少年特发性关节炎（JIA）的检查，并被转诊进行重复MRI检查。主治放射科医生询问得知，患儿10周前曾摔倒在木棍上。发现了明显强化的滑膜炎、腘窝淋巴结肿大和一个线性异物，并经超声证实。手术中成功取出了一根3厘米长的木刺。该病例凸显了区分JIA和异物性滑膜炎这一罕见挑战，并强调了放射科医生详细询问病史和采用精细成像技术的重要性。
