PMC6370114_01
PMC6370114_02
(A) Anteroposterior radiographs acquired 6 years after total hip arthroplasty show the right hip. (B) Radiograph acquired 6 years after total hip arthroplasty shows expansion and dissolution of the small trochanter region. (C) Postoperative radiograph of the hip at 4 days shows proximal femoral prosthesis revision and tumor prosthesis resection.
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PMC6370114_02_medi-98-e14071-g001.jpg
F1
Six years prior, the patient suffered a right femoral neck fracture after a fall and received a corrective THA in another medical center (Fig. 1A).
Computed tomography of the chest shows a malignant mass in the right upper lung.
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PMC6370114_02_medi-98-e14071-g002.jpg
F2
Computed tomography (CT) showed a mass in the right upper lung and a large lymph node in the mediastinal and right hilum, indicating central lung cancer and lymph node metastasis (Fig. 2).