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Tumors masquerading as hematomas.

William G Ward1, Bruce Rougraff, Robert Quinn

  • 1Department of Orthopaedics, Wake Forest University School of Medicine, Winston-Salem, NC 27157-1070, USA. wgward@wfubmc.edu

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Summary

Malignant soft tissue tumors can mimic hematomas, leading to delayed diagnosis and treatment. Early biopsy and specialist referral are crucial for accurate diagnosis of these rare but serious conditions.

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Area of Science:

  • Oncology
  • Radiology
  • Pathology

Background:

  • Malignant soft tissue tumors with internal hemorrhage can be misdiagnosed as simple hematomas.
  • This diagnostic confusion can lead to suboptimal patient management and significant delays in appropriate care.

Purpose of the Study:

  • To analyze the diagnostic challenges and delays associated with soft tissue malignancies presenting as hematomas.
  • To identify clinical and imaging features that may help differentiate these tumors from benign hematomas.

Main Methods:

  • Retrospective review of 31 patients with malignancies misdiagnosed as hematomas.
  • Analysis of patient demographics, clinical presentation, imaging findings (MRI, ultrasound), and treatment history.
  • Evaluation of diagnostic delays and reasons for misdiagnosis.

Main Results:

  • Average diagnostic delay was 6.7 months.
  • Diagnoses included soft tissue sarcomas (27), metastatic cancers (3), and lymphoma (1).
  • Lack of subcutaneous ecchymosis and contained intratumoral hemorrhage were noted; imaging often failed to raise suspicion of malignancy.

Conclusions:

  • Intratumoral hemorrhage contained by a pseudocapsule can prevent typical ecchymosis, offering a diagnostic clue.
  • Magnetic resonance imaging and ultrasound may not accurately diagnose these lesions.
  • Prompt biopsy and specialist referral are essential when malignancy is suspected to avoid diagnostic delays and inappropriate treatments.