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 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

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features the following object that was seen in a urine sediment. It was initially moving, but very quickly died. It measures approximately 130 micrometers in length. What’s the identification?

By Bobbi Pritt, M.D. • November 14, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a 45-year-old female patient who was suspected of having an infection with “Strongyloides stercoralis.” A stool specimen was provided for Baermann concentration. The following structure was found, measuring about 300 µm in extended state. What’s the identification?

By Bobbi Pritt, M.D. • November 7, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features an elderly woman who presented with a 2-week history of 10 pruritic burning nodules involving her left upper arm, face, breast, chest, trunk, and legs. What’s the identification?

By Bobbi Pritt, M.D. • October 24, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a “worm” found in the cecum, an incidental finding during colonoscopy. It measures approximately 4 cm long. What’s the identification?

By Bobbi Pritt, M.D. • October 17, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a wet preparation of liver cyst fluid (40x objective). What’s the identification?

By Bobbi Pritt, M.D. • October 10, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a Nigerian male patient who returned to Belgium after having visited his relatives. He presented at the hospital, where a worm was extracted from his eye (length: 5 cm). What’s the identification?

By Bobbi Pritt, M.D. • October 3, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features objects that were noted on a Papanicolaou-stained rectal smear from a male patient. They measure approximately 5 to 10 micrometers in diameter. Images were taken using a 40x objective. What’s the identification?

By Bobbi Pritt, M.D. • September 26, 2018

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a centrifuged urine specimen obtained from a child from Sub-Saharan Africa. Many ovoid, elongate, and “lemon-shaped” objects are seen, ranging in size from 50 to 150 micrometers in length. What’s the identification?

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

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features an unexpected finding on a three-day-old pleural fluid bacterial culture growing on a Mueller-Hinton agar plate. The specimen was from a hospitalized North American adult patient with no travel history. What’s the identification?

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

Every week, Mayo Clinic microbiologist Bobbi Pritt, M.D., posts a new Parasite Wonders case. This week’s case features a European male with recent travel to Senegal who presented with right conjunctivitis. On ocular examination, a 10-cm long worm was identified and removed from the right conjunctiva. It measured 470 micrometers in diameter. What is the identification?

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