Creepy, Dreadful, Wonderful Parasites

Creepy, Dreadful, Wonderful Parasites

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features the following objects that were seen in a wet mount of a concentrated stool specimen. The specimen was obtained from a West African baboon, but this finding may also be seen in human stool specimens. What’s the identification?

By Bobbi Pritt, M.D. • February 20, 2019

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features the following that was noted in skin scrapings from an elderly man. What’s the identification?

By Bobbi Pritt, M.D. • February 13, 2019

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features the following objects that were seen on a wet mount (with iodine) of a concentrated stool specimen (400x original magnification). Size is between 15 and 20 µm in length. What’s the identification?

By Bobbi Pritt, M.D. • February 6, 2019

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features the following objects that were seen in a wet mount of a concentrated stool specimen from a 50-year-old woman. They measure approximately 50-60 micrometers in greatest dimension. What’s the identification?

By Bobbi Pritt, M.D. • January 30, 2019

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a middle-aged man who recently returned from Tanzania. He presented with multiple furuncular lesions. What’s the identification?

By Bobbi Pritt, M.D. • January 23, 2019

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a toddler who passed the following 15-cm long worm. What’s the identification?

By Bobbi Pritt, M.D. • January 16, 2019

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features the following worm. She was ripped in half, and only the anterior end was submitted to us. If intact, she would have measured approximately 1 cm long. What’s the identification?

By Bobbi Pritt, M.D. • January 9, 2019

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features an arthropod that was donated to Dr. Pritt. What’s the identification?

By Bobbi Pritt, M.D. • January 2, 2019

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features the following transmission electron microscopy images of a liquid-based stock culture that were used as a positive control. What’s the identification?

By Bobbi Pritt, M.D. • December 19, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a whole slide image of an H&E-stained section from a bladder resection. What’s the identification?

By Bobbi Pritt, M.D. • December 12, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a stool specimen from a traveler returning from Iran. No clinical data is available, nor any additional lab results. The photos show structures that were found in the patient’s stools. The average size of these objects is 42 x 25 µm. What’s the identification?

By Bobbi Pritt, M.D. • December 5, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a small “worm” following removal during screening colonoscopy. It was tan-white and measured approximately 1.3 cm in length. The following are photos of its microscopic appearance. What’s the identification?

By Bobbi Pritt, M.D. • November 28, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a Thanksgiving theme. Which parasites can you get from eating undercooked turkey (the centerpiece of the classic Thanksgiving day feast)? Here is one of them in a squash preparation of a brain biopsy. What’s the identification?

By Bobbi Pritt, M.D. • November 21, 2018