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Cancer

Metastatic Cancer Misdiagnosis Highlights Diagnostic Challenges

Strategic Insights

— 2 min read

Researchers at Taizhou Hospital of Zhejiang Province presented a case study where a patient with a history of lung cancer was misdiagnosed with an avulsion fracture, when in fact, the patient had a pathological fracture due to metastatic cancer. The case underscores the importance of maintaining a high index of suspicion for metastatic disease, especially in patients with a history of malignancy, and the need for comprehensive diagnostic approaches, including MRI to avoid misdiagnosis.

Key Takeaways:

  • The case study highlights the limitations of initial imaging modalities, such as X-ray and CT scans, in detecting subtle bone marrow changes, and the importance of MRI in identifying metastatic lesions.
  • Metastatic cancer can masquerade as a common fracture, leading to delayed treatment and increased morbidity.
  • The patient's initial presentation of left hip pain after minor trauma was initially diagnosed as an avulsion fracture of the femoral lesser trochanter (LT).
  • MRI and contrast-enhanced MRI revealed irregularities in the femoral LT with abnormal bone marrow signals and a prominent soft tissue mass, leading to the diagnosis of a pathological fracture secondary to metastatic cancer.
  • This case emphasizes the need for comprehensive diagnostic approaches, especially in patients with a history of malignancy.
  • The researchers recommend maintaining a high index of suspicion for metastatic disease and using MRI to avoid misdiagnosis.
  • Early recognition and appropriate management of pathological fractures are crucial for improving patient outcomes and quality of life.
  • The study was conducted by a team of researchers led by Meng-qi Pang, with additional authors including Feng-ze Wu, Jia-yan Chen, Rang-teng Zhu, Gang Jin, Wei-jie Gong, and Han-tao Jiang.

Statistics:

  • 79-year-old male patient with a history of poorly differentiated squamous cell carcinoma of the left lung presented with a pathological fracture.
  • MRI and contrast-enhanced MRI revealed irregularities in the femoral LT with abnormal bone marrow signals and a prominent soft tissue mass.
  • The case study highlights the importance of MRI in identifying metastatic lesions, with a sensitivity and specificity of 85% and 92%, respectively.
  • The study cited a previous study that reported a 75% accuracy rate for MRI in detecting metastatic cancer in the bone marrow.
  • The researchers concluded that comprehensive diagnostic approaches, including MRI, are crucial for accurately diagnosing metastatic cancer and avoiding misdiagnosis.

Sources:

  • Pang, M.-q., et al. (2025). Case Report: A case of femoral metastatic cancer misdiagnosed as isolated femoral lesser trochanter avulsion fracture. Frontiers in Oncology, 15.
  • (Frontiers in Oncology - http://www.frontiersin.org/oncology)
  • Publisher: Frontiers Media S.A.
  • doi: 10.3389/fonc.2025.1565771

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