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Taenia solium (pork tapeworm, cysticercus)
The cysticercus (bladder worm) is the adult form of Taenia solium (C cellulosae).
Pathology:
1) infection with the adult worm leads to infection limited to the gastrointestinal tract
2) infection with the eggs from the adult form leads to disseminated disease (cysticercosis)
3) appears on biopsy as a translucent fluid-filled oval sac containing a single inverted scolex measuring 5 mm or more in diameter
* image [5]
Clinical manifestations:
-> symptoms are often produced when the organism dies, which evokes an inflammatory response
Laboratory:
1) biopsy
a) the scolex of Taenia solium has 4 suckers & a rostellum with 2 rows of hooks - image [5]
b) gravid proglottids have 7-13 lateral uterine branches
2) Taenia solium serology
- Taenia solium antibody in CSF
- Taenia solium antibody in serum
3) Taenia solium antigen in stool
4) Taenia solium larva DNA in CSF
5) see ARUP consult [3]
Related
cysticercosis
Taenia solium adult Ab in Serum
Taenia solium antibody in CSF
Taenia solium antibody in Serum
Taenia solium antibody; cysticercosis antibody
Taenia solium antigen in stool
Taenia solium IgG in Serum
Taenia solium IgG in Serum by immunofluorescence
Taenia solium larva Ab in CSF
Taenia solium larva Ab in Serum
Taenia solium larva antigen in serum
Taenia solium larva DNA in blood
Taenia solium larva DNA in CSF
Taenia solium larva DNA in tissue
Taenia solium larva IgA in CSF
Taenia solium larva IgA in Serum
Taenia solium larva IgG in CSF
Taenia solium larva IgG in Serum
Taenia solium larva IgM in CSF
Taenia solium larva IgM in Serum
General
Taenia
Properties
KINGDOM: animal
PHYLUM: helminth
References
- Clinical Diagnosis & Management by Laboratory Methods,
19th edition, J.B. Henry (ed), W.B. Saunders Co., Philadelphia,
PA. 1996, pg 1287
- Harrison's Principles of Internal Medicine, 14th ed.
Fauci et al (eds), McGraw-Hill Inc. NY, 1998, pg 1224-25
- ARUP Consult: Taenia Solium - Cysticercosis
The Physician's Guide to Laboratory Test Selection & Interpretation
https://arupconsult.com/content/cysticercosis
- Grimm L
What's Eating You: 12 Common Intestinal Parasites.
Medscape. November 25, 2019
https://reference.medscape.com/slideshow/intestinal-parasites-6010996
- Lu VM, Saad AG, Shah AH
Images in Neurology
Histologic Anatomy of Neurocysticercosis.
JAMA Neurol. Published online October 23, 2023.
PMID: 37870830
https://jamanetwork.com/journals/jamaneurology/fullarticle/2810536
Images
image related to Taenia solium