| This suspicious form, recovered from a stool sample, measures 30 µm in diameter. | View Page |
| This suspicious form, seen in a stool sample, measures 10 µm in diameter. | View Page |
| This suspicious form measures 13 µm and was recovered from a stool sample. | View Page |
| This suspicious form was recovered in muscle tissue. | View Page |
| This suspicious form, shown here at both low (10X) and high dry (40X) power, measures 90 µm by 42 µm. It was seen in a stool sample. | View Page |
| This suspicious form, found in a stool sample, measures 15 µm. | View Page |
| This suspicious form, seen on a scotch tape prep, measures 54 µm by 28 µm. | View Page |
| This suspicious form was recovered from a nodule biopsy. It measures 225 µm in length and lacks a sheath. | View Page |
| This suspicious form was found on a blood smear. | View Page |
| This suspicious form, found in stool, measures 55 µm. | View Page |
| This suspicious form, found in stool, measures 25 µm. | View Page |
| This suspicious form, found in urine, measures 120 µm by 50 µm. | View Page |
| This suspicious form was found in stool. | View Page |
| This suspicious form, shown here under both low and high power, was found in a stool sample and measures 50 µm. | View Page |
| These suspicious forms were seen on a blood smear. | View Page |
| This suspicious form, found in stool, measures 54 µm by 32 µm. | View Page |
| This suspicious form was recovered in stool. | View Page |
| This suspicious form, found in stool, measure 10 µm. | View Page |
| This suspicious form is associated with which of the following conditions? | View Page |
| A 35 year old male presented to the local clinic complaining of abdominal cramps, severe diarrhea, and intestinal gas discomfort. A stool was collected for parasite examination. It was foul-smelling and light colored in nature. This suspicious form was recovered and measured 10 µm by 12 µm. The patient is infected with: | View Page |
| A 43 year old female presented to her doctor for a routine check-up. Her only complaint was that she had been experiencing watery stools that occasionally contained pus and blood. Examination revealed tenderness in her abdomen. A stool for parasite study was sent to the lab. Two suspicious forms were seen. The oblong form on measured 53 µm by 60 µm whereas the rounder form measured 45 µm by 37 µm. Use the pulldown boxes to identify each picture: | View Page |
| A 27 year old male was seen in the emergency room complaining of diarrhea. He had no other symptoms and was in very good health. The doctor ordered a stool for culture and parasite study. The culture revealed no enteric pathogens. This suspicious form was seen on the wet preparations and the permanent stain. It measured 16 µm. With which of the following parasites is this patient most likely infected? | View Page |
| A 31 year old male missionary worker recently returned from Africa where he helped a small rural community update their sanitation practices. He presented to his physician weak and complained of recent weight loss, abdominal pain, and diarrhea that was often bloody. The doctor ordered a battery of tests including a complete blood count (CBC) and stool for parasite examination. The CBC revealed eosinophilia and anemia. This suspicious form was seen on the wet preparations. It measured 52 µm by 27 µm. What parasite is mostly likely present? | View Page |
| An 18 year old female athlete, who recently competed in a barefoot run for charity in Southern Georgia, presented to her doctor for a routine check-up. Other than complaining of being exhausted and having occasional diarrhea, she was in good health. The doctor ordered a stool for culture and parasite examination. The culture was negative. Numerous suspicious forms, as that shown here, were seen upon microscopic examination of the stool. The name of this suspicious form is: | View Page |
| A 12 year old female went to her doctor for her yearly back-to-school check-up. She was in good health and was asymptomatic at the time of the examination. Due to the increased incidence of parasites in the area, the doctor ordered a stool for parasite examination as part of the routine physical testing. Multiple suspicious forms, measuring approximately 9 µm each were seen. Which of the following is most likely the identification of these forms? | View Page |
| A 45 year old mother of two went to her physician because her children were recently diagnosed with ascariasis and she was concerned that she had also contracted the disease. Other than complaining of recent sporadic diarrhea, she was in overall good health. The doctor ordered a stool for ova & parasite examination. This suspicious form, measuring 55 µm was seen throughout the sample. This form is most likely: | View Page |
| An 18 year old immigrant from the Philippines presented to the local clinic shortly after relocating to the United States complaining of fever and chills. Examination of the young adult revealed enlarged lymph nodes. Blood was drawn and submitted for culture and parasitic examination. The culture was negative. This suspicious form was seen on the Giemsa-stained blood smear. It measures 225 µm in length. This patient is most likely infected with: | View Page |
| A 27 year old female graduate student recently returned from South America, where she completed a nature study of the rain forest. She spent months "living off the land." The woman went to her physician seeking treatment for a sinus infection, which she thought was responsible for several recent bouts of diarrhea. Upon questioning the patient, the doctor decided to collect stool for culture and parasitic examination. The stool culture was reported as "no enteric pathogens isolated." This suspicious form was seen on both wet preparations and on permanent stain. It measures 17 µm. The identify of this form is most likely: | View Page |
| A 31 year old female with a known history of amebiasis, presented to her physician complaining of bloody diarrhea and fever. Previous patient history revealed that she lives in substandard conditions. Parasitic examination of the woman's stool revealed this suspicious form that measures 20 µm. The identification of this form is: | View Page |
| A 40 year old male just returned from a six-month tour of the Far East. He went to his doctor upon his return complaining of weakness, diarrhea, fever and cough. Upon questioning the patient it was learned that he spent many an evening swimming in the various local fresh water ponds. The doctor, suspicious of a parasitic infection, ordered a stool for examination. Two suspicious forms were seen: form 1 is roundish and measures 77 µm by 62 µm. Form 2 is long and ladder-like and lays on the edge of form 1. What are these two structures? | View Page |
| A 6 year old female presented to the local clinic complaining of intense perianal itching and diarrhea. The doctor ordered a cellophane tape prep and stool for routine culture and parasitic examination. The cellophane tape prep revealed suspicious form on the left. The stool culture was negative. The form on the right was seen upon examination of the stool for parasites, which measures 10 µm. Label these two suspicious forms: | View Page |
| This suspicious form, recovered in stool, measures 120 µm by 63 µm. Name that parasite! | View Page |
| This suspicious form, which measures 20 µm, was recovered in sigmoidoscopic material. Name that parasite! | View Page |
| This suspicious form measures 18 µm and was seen in stool. Name that parasite! | View Page |