Tuesday, August 6, 2013

Case of the week 268

The following were removed from the small intestine during upper endoscopy for abdominal pain.  Identification?  The larger of the 2 measures 1.3 cm in length.  Bonus points for identification to the genus and species level.



 

8 comments:

Lukus Roberts said...

Ancycloctoma duodenale - the twin ventral plates with 2 teeth each differentiate it from A. caninum which has ventral plates with 3 teeth each.

the large worm is likely a female and the smaller a male. 1.3 mm is pretty much the top range for adult females.

A. duodenale is more prominent in humans than A. caninum which, as the name suggests prefers to live in dogs

Lukus Roberts said...

in addition, the scary 'vampireishness' of Ancyclostoma differentiates it from Necator which has slicing dicing twin ventral plates...

Anonymous said...

A. duodenale...Nice picture of the teeth! Lee

Anonymous said...

Agree with A. duodenale.

Anonymous said...

Definitely A. duodenale. Lukus has given the definite identification, I only want to add that the smaller one is the typical male with its terminal copulating bursa on the left side of the picture.

Florida fan

A Marty said...

Definity ancylostomiasis...consider also A caninum.

Anonymous said...

Were was the patient located, I never seen any Ancylostoma sp. in the Netherlands.

Anonymous said...

Ankylostoma duodenale