Creepy Dreadful Wonderful Parasites

The following were seen on splenic aspirate. Diagnosis?

Answer: Leishmania spp. amastigotes. Note the small (2-5 micron) oval-shaped objects within and outside of macrophages, with a nucleus an...

Here's a more straight-forward case than our recent ones: The following object was seen on stool ova and parasite examination and measur...

Answer: Entamoeba histolytica/dispar Congratulations to all of the viewers who wrote in with the answer - you recognized that the morpholog...

OK, usually I stick with human parasites, but I recently came upon some rodents with the most remarkable parasites! We were conducting a ca...

Answer: Bot Fly larvae As Bill mentions in his comment, he tried to rear two of these larval flies to adults but they did not enter the pup...

The following were seen on a giemsa-stained thick blood film made from EDTA whole blood. Identification? (CLICK ON IMAGES TO ENLARGE) 400X ...

Answer: Wuchereria bancrofti . The main features that support the diagnosis are: 1. presence of a sheath (faintly staining) 2. nuclei do ...

The following were seen on an unstained "squash prep" of a diaphragm biopsy. Diagnosis? (CLICK ON IMAGES TO ENLARGE)

Answer: Trichinella spp. Shown here are multiple L1 larvae in skeletal muscle. Note that each larvae is contained within a 'nurse...