Monday, February 1, 2010

Case of the week 104

The following H&E stained histologic sections are from a rectal abscess in a 5 year old boy. Identification? (CLICK ON IMAGES TO ENLARGE)


8 comments:

Alasdair HIll said...

Whipworm... Tricuria tricuris.

Scott said...

Enterobius vermicularis (pinworm) eggs

Kathy said...

I agree with Enterobius vermicularis.

Anonymous said...

I would say pinworm eggs.


Mayo New England

Anonymous said...

I agree with pinworm, that and when you blow up the image to see it closer you also see the file is called pinworm.jpg!! :)

Anonymous said...

Enterobius vermicularis. A portion of the egg is flattened, resembling an underinflated football. apropos for the season! BW in VT

Salbrent said...

Enterobius vermicularis, eggs
I would measure them

Can you tell if this is recent infection or an older one?

Parasite Gal said...

I believe this manifestation (the abscess) is acute, since the inflammatory response consists of neutrophils, and there is no evidence of granulation tissue or fibrosis. As far as the infection itself however, I'm not sure if it's possible to say how long it's been going on. The adult worms only live for a few months, but autoinfection is common, so it's possible that the infection has been around longer than a few months.