■髌骨肿瘤非常罕见,大多数是良性的或中间型的。在这份报告中,我们描述了由胃癌引起的转移性髌骨肿瘤的经验,类似于非常罕见的原发性或继发性动脉瘤样骨囊肿,并回顾文献。
方法:一名65岁男子表现为髌骨区域剧烈疼痛,膝关节活动范围明显受限。他有胃癌病史;然而,流行病学,临床,影像学检查结果使我们强烈怀疑动脉瘤样骨囊肿。因此,由于疼痛严重,我们进行了骨肿瘤刮除和自体人工骨移植,但没有进行活检。病理结果提示胃癌有转移,因此,行髌骨切除术和股筋膜髌腱增强术。术后进行肌肉骨骼肿瘤协会(MSTS)评分以评估疼痛和功能。
■我们经历了一个非常罕见的胃癌相关转移性髌骨肿瘤,在频率和影像学发现上类似于原发性或继发性动脉瘤样骨囊肿。最终进行了髌骨切除术,患者的MSTS评分明显改善。
结论:尽管频率非常低,髌骨转移性骨肿瘤必须考虑在内,而不会被频率或影像学发现误导,并且必须进行活检。
UNASSIGNED: Patellar bone tumors are very rare, and most are benign or of intermediate type. In this report, we describe our experience of a metastatic patellar bone tumor caused by gastric cancer, which resembled a very rare primary or secondary aneurysmal bone cyst and review the literature.
METHODS: A 65-year-old man presented with severe pain in the patellar region and marked limitation of the knee joint range of motion. He had a history of gastric cancer; however, epidemiological, clinical, and imaging findings led us to strongly suspect an aneurysm-like bone cyst. Thus, we performed bone tumor curettage and autologous artificial bone grafting without biopsy because of the severe pain. Pathology results showed gastric cancer metastasis; hence, patellectomy and patellar tendon augmentation with femoral fascia were performed. The Musculoskeletal Tumor Society (MSTS) score was taken postoperatively to assess pain and function.
UNASSIGNED: We experienced a very rare gastric cancer-related metastatic patellar bone tumor, which resembled a primary or secondary aneurysmal bone cyst in frequency and imaging findings. Patellectomy was ultimately performed, and the patient\'s MSTS score improved markedly.
CONCLUSIONS: Despite its very low frequency, patellar metastatic bone tumors must be taken into account without being misled by the frequency or imaging findings and a biopsy should necessarily be performed.