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Updated: Apr 11, 2026

Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis
Published on: February 10, 2023
[Ultrasound findings of hamstring hematoma in a patient taking anticoagulants]
Shinji Miyagawa1, Ayumi Arai, Hidetaka Mitsumura
1Department of Neurology, The Jikei University School of Medicine.
A patient started anticoagulation for secondary prevention of stroke, achieving a prothrombin time-international normalized ratio within the optimal therapeutic range. The patient subsequently complained of pain in the left thigh on hospital day 25, and ultrasonography showed a large intramuscular hematoma in the left hamstring. The intramuscular hematoma gradually reduced without surgical intervention. Ultrasound examination plays an important role in precisely diagnosing intramuscular hematoma and monitoring changes in hematoma size.
A patient started anticoagulation for secondary prevention of stroke, achieving a prothrombin time-international normalized ratio within the optimal therapeutic range. The patient subsequently complained of pain in the left thigh on hospital day 25, and ultrasonography showed a large intramuscular hematoma in the left hamstring. The intramuscular hematoma gradually reduced without surgical intervention. Ultrasound examination plays an important role in precisely diagnosing intramuscular hematoma and monitoring changes in hematoma size.
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