Microbiology, parasitology & COVID-19
Parasites-gastrointestinal (not liver)
Raillietina
Author: Nat Pernick, M.D.
Last author update: 22 April 2019
Last staff update: 5 October 2020
Copyright: 2019-2023, PathologyOutlines.com, Inc.
PubMed Search: Raillietina[TI] full text[sb]
Table of Contents
Definition / general | Diagrams / tables | Clinical features | Case reports | Gross description | Gross images | Microscopic (histologic) description | Microscopic (histologic) images | Differential diagnosisCite this page: Pernick N. Raillietina. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/parasitologyraillietina.html. Accessed June 5th, 2023.
Definition / general
- Parasite primarily of rodents and poultry (Wikipedia: Raillietina [Accessed 22 April 2019])
Diagrams / tables
Images hosted on other servers:
Egg of Raillietina
Clinical features
- Produces small rice grain-like proglottids (which may be motile in freshly passed stool) and collections of eggs, each containing a hooked larva (Pritt: Creepy Dreadful Wonderful Parasites Blog - Answer to Case 536 [Accessed 22 April 2019])
- Proglottid, if present, has a single lateral or dorsal uterine pore (varies by species)
Case reports
- Toddler living in the Indonesia region with objects found in stool (Pritt: Creepy Dreadful Wonderful Parasites Blog - Case of the Week 536 [Accessed 22 April 2019], Clin Infect Dis 2019 Feb 1 [Epub ahead of print])
Gross description
Gross images
Contributed by Bobbi Pritt, M.D.
Motile, rice-like object in stool of toddler
Images hosted on other servers:
Raillietina tetragona
Microscopic (histologic) description
- Egg capsules are 200 μm structures with dark center, containing eggs measuring 25 - 35 μm; each egg has a hooked larva (Pritt: Creepy Dreadful Wonderful Parasites Blog - Answer to Case 536 [Accessed 22 April 2019])
Microscopic (histologic) images
Contributed by Bobbi Pritt, M.D.
Egg capsules containing eggs
Eggs with hooklets
Differential diagnosis
- Dipylidium caninum: has 2 lateral pores, one on each side; has egg packets, not egg capsules (Pritt: Creepy Dreadful Wonderful Parasites Blog - Answer to Case 536 [Accessed 22 April 2019])
