| A 20 year-old female was admitted into the hospital complaining of 10 to 15 bloody mucous stools per day, fever, gastrointestinal disturbances, abdominal pain, and nausea. The preliminary O & P report went out as "Probable Entamoeba histolytica trophozoites and cysts, confirmation pending." This patient is most likely suffering from: | View Page |
| Match each organism with its respective associated condition: | View Page |
| This suspicious form, found in stool, which measures 15 µm by 10 µm, is responsible for which of the following diseases? | View Page |
| This suspicious form, recovered in stool, measures 12 µm in length. Which of the following conditions is this form responsible for causing when present? | View Page |
| Match each parasite named below with its respective primary symptom: | View Page |
| Match each pictured parasite with its corresponding associated condition: | View Page |
| The eggs of Necator americanus are basically indistinguishable from the eggs of: | View Page |
| A 21 year old male presented in the emergency room with symptoms resembling a liver infection. The patient complained of abdominal pain, fever, cough, nausea, vomiting and constipation alternating with diarrhea. Further examination revealed the presence of a hepatic abscess. This suspicious form was recovered following parasitic examination of a sample from the abscess and measures 20 µm. What condition is the patient most likely suffering from? | 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 55 year old female, who recently returned from an extensive trip to China, presented to her physician complaining of diarrhea and abdominal cramps. The doctor ordered a complete blood count (CBC), chem 21 panel, and stool for culture and parasite examination (O & P). The CBC revealed pronounced eosinophilia. The chem 21 and stool culture were unremarkable. The O & P revealed suspicious forms like the one below that each measured approximately 140 µm by 80 µm. This patient is most likely infected with: | 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 |
| A 44 year old female immigrant from Southeast Asia presented to the local clinic complaining of fever, chills, diarrhea and weakness. Patient history revealed that the woman worked in a research laboratory in her homeland. Her primary project was to develop an effective insecticide for the dreaded sandfly. The doctor decided to culture her blood for parasites. This form, measuring 14 µm, was recovered. The patient is most likely suffering from: | View Page |
| A 50 year old male domestic airline pilot was rushed to the hospital after complaining of tremendous fluid loss due to severe diarrhea. History revealed that the patient was diagnosed with AIDS 6 months ago. The doctor ordered a battery of tests including a stool for parasite examination. Since the sample was properly labeled indicating that the patient was immunocompromised, the lab performed both the standard processing procedures and a modified acid-fast (mod AFB) stain. The mod AFB stain revealed this suspicious form which measured a mere 4 µm. This patient is most likely infected with: | 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 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 |
| A 16 year old male champion athlete went to his doctor complaining of a persistent cough, fever, bloody diarrhea and overall weakness. Upon questioning the patient, it was learned that he had recently competed in a freshwater swimming competition in the Caribbean. Examination revealed a dermatitis on the patient's right calf. A battery of tests were ordered including a CBC, chemistry profile, and a stool for culture and parasitic examination. The CBC revealed the presence of eosinophilia. The other hematology and chemistry tests were unremarkable. The culture was negative. This suspicious form was seen on all parasite preparations made from the stool sample submitted. This form measures 165 µm by 68 µm. This patient is most likely suffering from an infection with: | View Page |
| A 65 year old Asian female presented to the emergency room exhibiting severe abdominal pain, fever and diarrhea. Examination revealed an enlarged liver that was tender to the touch. Patient history revealed that the woman worked in a fish processing plant for years prior to moving to the United States. Her diet was heavy in raw fish. Stool and duodenal contents were collected and sent to the laboratory for cultures and parasite examination. The cultures were unremarkable. This suspicious form was seen in both specimen types. It measures 27 µm by 14 µm. This patient is most likely suffering from: | View Page |
| A 7 year old male presented to the local clinic experiencing mild, yet annoying, abdominal pain, diarrhea and nausea. Patient history revealed that the child lives in a shack where sanitation practices are marginal, at best. The dwelling is infested with rats and multiple insects. Stool was collected and submitted for parasitic study. Numerous suspicious forms, measuring 60 µm by 75 µm were seen. This child 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 fresh stool sample was submitted to the laboratory for parasitic examination on a 30 year old male who presented to a local clinic complaining of gastrointestinal discomfort and overall weakness. The only patient history available about the patient was that he was here job hunting and that he is originally from rural Mississippi. The sample was immediately processed and this suspicious form was seen. No other suspicious forms resembling eggs were seen. The patient is most likely infected with: | 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 recently completed a two-week hiking expedition in Russia. Upon his return to the United States, the man presented to his physician complaining of severe foul-smelling diarrhea and abdominal discomfort. The doctor immediately suspected a parasitic infection and ordered stool for examination. The sample was loaded with this suspicious form that averaged 13 µm in length. This patient is most likely suffering from: | View Page |
| A 4 year old female from South Carolina was rushed to the emergency room who was suffering from malaise, bloody diarrhea and abdominal pain. Examination revealed rectal prolapse. Stool was submitted for parasitic examination and this suspicious form was seen. It measures 45 µm by 20 µm. Which of the following is the correct identity of this suspicious form? | View Page |
| A 17 year old female went to her doctor complaining of diarrhea. With the exception of seasonal allergies, she was in relatively good health. Patient history was unremarkable. A stool was submitted for culture and parasite examination. The culture was reported out as "no enteric pathogens isolated." This suspicious form was seen on wet preparation and permanent stain. It measures 27 µm. This patient is most likely suffering from which of the following conditions: | 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 |
| A 29 year old male steak house owner from Arizona presented to his doctor complaining of weight loss, abdominal pain and diarrhea. Patient history revealed that the man eats all of his meals at his restaurant and his favorite meat is rare sirloin steak. The man also noted that he had recently been on anti-parasitic medication. The doctor ordered a stool for parasitic examination. These two suspicious forms were seen. The patient is most likely suffering from an infection with: | View Page |
| A stool was received in the laboratory for parasitic examination on a 49 year old female who just returned from missionary work in numerous third world countries around the world. The patient had been suffering from mild diarrhea over the past two weeks. These two suspicious forms were seen. Form 1 measures a mere 6 µm whereas form 2 measures 35 µm. Label these two forms: | View Page |
| A 35 year old man presented to his doctor with fever, diarrhea, abdominal pain and epigastric discomfort. Upon questioning the patient, it was learned that he travels extensively on business and loves to try new kinds of raw fish. The patient is most likely suffering from: | View Page |