Chondroblastoma of the patella with secondary aneurysmal bone cyst, an easily misdiagnosed bone tumor:a case report with literature review

Abstract Background Chondroblastoma (CB) is a rare, primary, benign bone tumor that commonly affects men aged 15–20 years. It usually detected in the epiphysis of long bones, such as proximal femur, humerus, and tibia. The patella an infrequent site. CB with secondary aneurysmal cyst (ABC) extremely rare patella, which can be easily confused other common tumors patella. Thus, it necessary to make right diagnosis get good outcome. Case presentation We have presented here case 30-year-old man who was suffering from anterior knee pain for past 6 months had aggravated 2 weeks before presentation. Osteolytic destruction could both his X-ray computed tomography (CT) examinations, while magnetic resonance imaging (MRI) fluid level. Accordingly, ABC presumed. diagnosed condition giant cell (GCT) and, accordingly, performed curettage inside focus region autogenous grafting following patient’s medical history, physical manifestations, results ancillary disease characteristics. However, intraoperative postoperative outcomes indicated histopathology consistent typical CB, suggesting definitive error diagnosis. patient finally along ABC. Conclusions Past studies demonstrated 3 commonest affecting are GCT, misdiagnosed GCT or Performing incision biopsy excision conducting histological examination may most effective method suspected