RT Book, Section
A1 Hotez, Peter J.
A2 Kline, Mark W.
SR Print(0)
ID 1182904056
T1 Toxocariasis (Visceral and Ocular Larva Migrans)
T2 Rudolph's Pediatrics, 23e
YR 2018
FD 2018
PB McGraw-Hill Education
PP New York, NY
SN 9781259588594
LK accesspediatrics.mhmedical.com/content.aspx?aid=1182904056
RD 2024/04/23
AB Toxocariasis  is  caused  by  helminth  larvae  of  dogs  and  cats  that  ordinarily  cannot  complete  their  life  cycle  in  humans  (Fig.  326-1).  Migrating  larvae  of  zoonotic  ascarids  may  be  associated  with  significant  pathology  by  wandering  through  extraintestinal  viscera,  causing  tissue  necrosis  and  provoking  eosinophilic  granulomatous  inflammation.  The  clinical  syndromes  of  visceral  larva  migrans  (VLM),  ocular  larva  migrans  (OLM),  or  covert  toxocariasis  are  most  commonly  caused  by  larvae  of  the  dog  ascarid  Toxocara  canis  and,  less  frequently,  the  cat  ascarid  Toxocara  cati.  Covert  toxocariasis  refers  to  infection  with  either  T  canis  or  T  cati  that  results  in  either  asymptomatic  infection  or  infection  associated  only  with  asthma,  wheezing,  or  other  pulmonary  dysfunctions  due  to  larval  lung  migrations,  or  possibly  developmental  delays  due  to  larval  migrations  through  the  brain.