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Young man with left forearm pain
  1. Pei-Ying Tsai1,
  2. Yu-Chang Liu2,
  3. Wei-Jing Lee2
  1. 1 Emergency Department, Chi Mei Foundation Hospital, Tainan, Taiwan
  2. 2 Emergency Medicine, Chi Mei Foundation Hospital, Tainan, Taiwan
  1. Correspondence to Dr Wei-Jing Lee, Department of Emergency Medicine, Chi Mei Foundation Hospital, Tainan 710, Taiwan; saab931103{at}yahoo.com.tw

https://doi.org/10.1136/emermed-2021-211138

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    Clinical introduction

    A 26-year-old man presented to the emergency department with a 4-day history of a painful swollen mass on the left arm. He had received primary wound closure from a regional hospital after a penetrating injury from a utility knife. Physical examination revealed a tender, soft mass over volar side of left wrist. Point-of-care ultrasound was performed (figure 1A,B).

    Figure 1

    Point-of-Care ultrasound using linear vascular probe (A) 2D mode, (B) colour Doppler mode. 2D, two dimensions.

    Question

    What is the most likely diagnosis?

    1. Left forearm haematoma.

    2. Left forearm abscess.

    3. Left forearm radial artery pseudoaneurysm.

    4. Left forearm tumour.

    Answer: C

    The ultrasound shows the characteristic findings …

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    Footnotes

    • Contributors P-YT, Y-CL and W-JL provided equal contribution to this submission.

    • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Competing interests None declared.

    • Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

    • Provenance and peer review Not commissioned; internally peer reviewed.

    • Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.