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Caliber-persistent labial artery. A common vascular anomaly

J G Lovas1, B Rodu, H L Hammond

  • 1Department of Oral and Maxillofacial Sciences, Faculty of Dentistry, Dalhousie University, Halifax, Nova Scotia.

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
|October 13, 1998
PubMed
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Caliber-persistent labial artery is a common vascular anomaly of the lips. Recognizing its unique lateral pulsation can prevent misdiagnosis and unnecessary surgical interventions.

Area of Science:

  • Oral pathology
  • Vascular anomalies
  • Dermatology

Background:

  • Caliber-persistent labial artery (CPLA) is a rare vascular anomaly, with only 16 cases previously reported in English literature.
  • Six of these reported cases were misdiagnosed as squamous cell carcinoma, leading to unnecessary surgical treatment.
  • The current study presents a significantly larger series of 187 clinical and 23 histopathologic cases.

Purpose of the Study:

  • To familiarize clinicians and pathologists with the clinical and histopathologic features of CPLA.
  • To highlight the importance of identifying lateral pulsation for accurate diagnosis.
  • To prevent misdiagnosis and unnecessary surgical procedures for this common vascular anomaly.

Main Methods:

  • Clinical examination of 187 cases, focusing on characteristic bluish, soft, linear or papular elevations.

Related Experiment Videos

  • Detailed observation for lateral pulsation, a unique diagnostic feature of CPLA.
  • Histopathologic review of 23 additional cases.

    • Main Results:

    • CPLA typically presents as an asymptomatic, soft, bluish papule or elevation on the lip mucosa.
    • Lateral pulsation is a key diagnostic sign, differentiating it from other lip lesions.
    • The upper lip to lower lip ratio was approximately 2:1, with more lower lip lesions biopsied.
    • No cases presented as ulcers or were clinically suspected of malignancy.

    Conclusions:

    • Clinicians should carefully assess lip mucosal papules for lateral pulsation to avoid misdiagnosis and unnecessary surgery.
    • Pathologists should recognize superficial, large-caliber arteries in lip biopsies as potentially representing CPLA.
    • Accurate identification of CPLA can prevent iatrogenic complications such as intraoperative arterial bleeding.