larva mi·grans (m  gr nz )n. pl. larvae mi·gran·tes (m -grnt z) A larval worm, typically a nematode, that wanders in the host tissues but does not develop to the adult stage. |
larva migrans.
larva migrans
Parasitology An infestation by non-human nematodes that penetrate and migrate through the skin, but which cannot complete their life cycle in humans
Larva migrans
Cutaneous LM Due to dog & cat hookworm, Ancylostoma braziliense, the larvae of which migrate a few mms/day, producing pruritic serpiginous tracks in the stratum germinatum that are visible below the skin
Visceral LM Due to dog–Toxocara canis or cat parasites–T cati, the life cycles of which in their usual hosts resemble that of Ascaris lumbricoides in humans; in VLM, embryonated eggs are accidentally ingested and hatch in the
intestine, penetrating the mucosa, aimlessly wander through the circulation, passing to liver and/or lung vessels and may be fatal if they involve the myocardium or CNS; in the eye, the resulting retinal granuloma mimics retinoblastoma
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