Whipworm infection other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aravind Kuchkuntla, M.B.B.S[2]
Overview
The other diagnostic studies for whip worm infection include stool examination for ova and parasites, colonoscopy and an abdominal ultrasound. The characteristic features of whip worm egg include a barrel like egg with two polar plugs. Colonoscopy is not routinely indicated, but it can be performed in patients with non specific symptoms and a negative stool test for the presence of eggs.
Other Diagnostic Studies
The other diagnostic studies for whip worm infection include stool examination for ova and parasites, colonoscopy and an abdominal ultrasound.
Stool Examination
- Microscopy : A stool examination for ova and parasites reveals the presence of whipworm eggs.
- Trichuris trichiura egg (wet preparation). The diagnostic characteristics are:
- A typical barrel shape
- Two polar plugs, that are unstained
- Size: 50 to 54 µm by 22 to 23 µm
The external layer of the shell of the egg is yellow-brown (in contrast to the clear polar plugs).
Colonoscopy
It is not performed routinely for the diagnosis of whipworm infection. It is an accidental finding in patients who undergo colonoscopy for routine indications. Colonoscopy can be done in patients presenting with non specific symptoms and have a negative stool test for the presence of eggs.
- Colonoscopy will reveal a white, mobile whip-like worm attached to the cecum. The thin head portion of the worm will be embedded in the mucosa, while the thicker portion visible within the lumen.[1][2]
Abdominal Ultrasound
- If the whipworm is present in the appendix, a continuous wriggling movement in the lumen of appendix called “whipworm dance” may be demonstrated.[3]
References
- ↑ Ok KS, Kim YS, Song JH, Lee JH, Ryu SH, Lee JH; et al. (2009). "Trichuris trichiura infection diagnosed by colonoscopy: case reports and review of literature". Korean J Parasitol. 47 (3): 275–80. doi:10.3347/kjp.2009.47.3.275. PMC 2735694. PMID 19724702.
- ↑ Wang DD, Wang XL, Wang XL, Wang S, An CL (2013). "Trichuriasis diagnosed by colonoscopy: case report and review of the literature spanning 22 years in mainland China". Int J Infect Dis. 17 (11): e1073–5. doi:10.1016/j.ijid.2013.02.008. PMID 23523058.
- ↑ Vijayaraghavan SB (2009). "Sonographic whipworm dance in trichuriasis". J Ultrasound Med. 28 (4): 555–6. PMID 19321687.