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Persistent primitive sciatic artery

R L Nicholson, S P Pastershank, B B Bharadwaj

    Radiology
    |March 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Persistence of the primitive sciatic artery was observed in two patients. This rare vascular anomaly was associated with an arteriovenous malformation in one and neurofibromatosis with lymphatic abnormalities in the other.

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    Area of Science:

    • Vascular anatomy
    • Congenital anomalies
    • Radiology

    Background:

    • The primitive sciatic artery is a fetal vessel that normally regresses during development.
    • Its persistence is a rare congenital anomaly with variable clinical presentations.
    • Understanding its anatomical variations is crucial for diagnosing and managing related vascular pathologies.

    Observation:

    • Angiography identified persistent primitive sciatic artery in two distinct cases.
    • Case 1: The persistent artery supplied a large arteriovenous malformation and was associated with an absent profunda femoris artery.
    • Case 2: This case involved neurofibromatosis, reduced lymphatic vessels in the left lower limb, a left subinguinal lymphocele, and absent external iliac and femoral arteries.

    Findings:

    • The study highlights the potential for persistent primitive sciatic artery to be linked with significant vascular and lymphatic abnormalities.

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  • The presence of an arteriovenous malformation underscores the hemodynamic implications of this anomaly.
  • Association with neurofibromatosis and lymphatic compromise suggests a broader spectrum of developmental defects.

    • Implications:

    • These findings emphasize the importance of recognizing the persistent primitive sciatic artery during vascular imaging.
    • Early identification can aid in the timely management of associated complex conditions like arteriovenous malformations and lymphatic disorders.
    • Further research into the embryological basis of these associations may elucidate developmental pathways.