Monday, January 21, 2013

Case of the Week 242

The following object was  found in a stool specimen from a 3 year old child.  It measured approximately 5 mm in length.




The following egg was expressed:

Identification?
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5 comments:

  1. AnonymousJanuary 21, 2013 at 9:06 AM

    Hymenolepsis nana?

    Lee

    ReplyDelete
  2. PearlieJanuary 21, 2013 at 10:12 AM

    Agree with above. Hymenolepis nana.
    The size of the adult parasite would suggest a dwarf tapeworm, which narrows it down to Hymenolepsis nana and diminuta. The H. nana eggs have polar filaments between the two membranes, which I think I see in the egg :)

    ReplyDelete
  3. MicrobeManJanuary 21, 2013 at 10:53 AM

    Hymenolepis nana it is!

    ReplyDelete
  4. CharoJanuary 22, 2013 at 3:34 AM

    Hymenolepis nana.
    The adult size is consistent with nana and diminuta. But what is distinctive between them, is that the egg has polar filaments spread out between the two membranes.

    ReplyDelete
  5. AnonymousJanuary 22, 2013 at 7:37 PM

    Hymenolepis nana.

    Florida fan

    ReplyDelete