双语病例丨肩关节钙化性肌腱炎~

健康   2024-09-12 20:16   江苏  
来源:熊猫放射





图c为6个月前X线平片

病史

47岁女性,慢性肩部疼痛伴急性加重。(A 47-year-old woman with severe acute on chronic shoulder pain.

影像学表现

MR T1WI(a)和抑脂T2WI(b)显示大结节和冈上肌腱远端明显的低信号(show areas of marked low signal in the greater tuberosity and distal supraspinatus tendon),抑脂T2WI上可见肱骨头和冈上肌腱远端明显水肿并围绕低信号灶(prominent edema in the humeral head and distal supraspinatus tendon is seen surrounding the foci of low signal)。

6个月前的X线片(c)显示冈上肌腱远端邻近大结节处的骨性密度结节(show an ossific density in the distal supraspinatus tendon near the greater tuberosity)。

鉴别诊断(前3位)
  • Calcific tendinitis (resorptive phase) 钙化性肌腱炎(再吸收期)

  • Trauma 创伤

  • Surface osteosarcoma 骨表面骨肉瘤

讨论
发病部位是本例的诊断要点。肩关节是钙化性肌腱炎的最好发部位,其中冈上肌腱最易受累。The location of the findings is the key to this case. The most common location for calcific tendinitis is the shoulder, with the supraspinatus being the most common tendon affected.
钙化性肌腱炎在不同时期表现亦不同,本例为急性再吸收期,显示骨髓的水肿和肌腱附着点的不规则钙化。Calcific tendinitis has a varied appearance, depending on its stage. In this case, the acute resorptive phase shows marrow edema and irregularity of the calcifications in the osseous insertion of the tendon. 
鉴别诊断包括大结节直接创伤造成的骨髓水肿和骨化性肌炎形成的骨性密度灶。MR T1WI上骨髓信号正常且钙化灶与骨分离,因此诊断骨表面骨肉瘤的可能性较小。The differential diagnosis includes direct trauma to the greater tuberosity with resultant marrow edema and ossific densities related to myositis ossificans. A surface osteosarcoma would be much less likely, because the marrow signal remains normal on the T1 MR image and the calcifications are separate from the bone, centered within the supraspinatus tendon.
诊断
  • 钙化性肌腱炎(再吸收期)
    Calcific tendinitis (resorptive phase)

要点
  • 由羟基磷灰石晶体在肌腱中沉积所致。Due to deposition of hydroxyapatite crystals in the tendons.

  • 急性临床症状可非常严重,可与感染和创伤相混淆。Acute clinical symptoms can be severe and can mimic infection or trauma.

  • 影像学上,钙化性肌腱炎可与侵袭性病变如感染或肿瘤相混淆。On imaging, calcific tendinitis can mimic aggressive processes such as infection or neoplasm.

  • 为自限性疾病,可予镇痛药对症止痛。Self-limited, with analgesics for pain relief.

  • 可行X线透视或超声引导下经皮针吸和(或)麻醉药物注射。Fluoroscopic or US guided percutaneous needle aspiration and/or injection of anesthestics can be performed.


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