Parasitology

Diagnosing Hymenolepiasis: Hymenolepis nana Egg

Morphological features of the dwarf tapeworm (Hymenolepis nana) egg during stool microscopy. Laboratory diagnosis of hymenolepiasis.

Native stool smear, Hymenolepis nana egg with oncosphere and filamentous threads
Native stool smear, Hymenolepis nana egg with oncosphere and filamentous threads

Hymenolepis nana (dwarf tapeworm) is a small tapeworm (cestode) that parasitizes the human small intestine, causing the disease hymenolepiasis.