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  1. Home
  3. Clinical, Ct, And Mri Features Of Acute Calcific Tendinitis Of The Longus Colli: A Case Series With Novel Imaging Findings.
  1. Home
  3. Clinical, Ct, And Mri Features Of Acute Calcific Tendinitis Of The Longus Colli: A Case Series With Novel Imaging Findings.

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Clinical, CT, and MRI features of acute calcific tendinitis of the longus colli: a case series with novel imaging

Rafael Maffei Loureiro1, Daniel Vaccaro Sumi1, Vitória Liz Taumaturgo da Costa1

  • 1Department of Radiology, Hospital Israelita Albert Einstein, Sao Paulo 05652-900, Brazil.

Dento Maxillo Facial Radiology
|June 14, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Acute calcific tendinitis of the longus colli (ACTLC) often presents with C1-C2 calcifications and prevertebral edema. A new "beak sign" and atlantoaxial joint effusion are common imaging findings in ACTLC.

Keywords:
calcific tendinitiscervicalgiacomputed tomography (CT)head and necklongus colli musclemagnetic resonance imaging (MRI)

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Area of Science:

  • Radiology
  • Orthopedics
  • Medical Imaging

Background:

  • Acute calcific tendinitis of the longus colli (ACTLC) is a rare condition causing neck pain.
  • Accurate diagnosis relies on characteristic imaging findings.

Purpose of the Study:

  • To detail the clinical and radiologic features of ACTLC.
  • To identify novel imaging signs associated with ACTLC.

Main Methods:

  • Retrospective analysis of 30 ACTLC patients (2013-2022).
  • Independent review of CT and MRI scans by two radiologists.
  • Assessment of clinical data, symptoms, and laboratory results.

Main Results:

  • All patients had acute cervicalgia and C1-C2 calcifications.
  • A novel
  • beak sign
  • was seen in 83% of cases.
  • Prevertebral soft-tissue edema and retropharyngeal fluid were common; atlantoaxial joint effusion occurred in 79% of MRI cases.

    • Conclusions:

    • This study provides the largest imaging-confirmed ACTLC cohort.
    • Prevertebral calcifications, edema, and the
    • beak sign
    • are key radiologic findings.
    • Atlantoaxial joint effusion is a newly recognized manifestation of ACTLC.