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23 Cards in this Set

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Dermatophytoses have the unique ability to utilize keratin as a source of nutrition. Thus, they grow in all of the following tissues EXCEPT:

a) Epidermis
b) Dermis
c) Hair
d) Nails
b) Dermis
Patient presents with a granulomatous ulcer with puncture. Three secondary lesions are noted along draining lymphatics. What fungi do you suspect?

a) Sporothrix schenckii
b) Trichophyton rubrum
c) Blastomyces dermatitidis
d) Candida albicans
a) Sporothrix schenckii
Patient presents with fungal. During the history, the patient mentions that she spent the last semester working in southern Arizona. Based on her past location what should you include in your differential?

a) Paracoccidioides brasiliensis
b) Coccidioides immitis
c) Histoplasma capsulatum
d) Blastomyces dermatitidis
b) Coccidioides immitis
Patient presents with fungal infection. During the history, the patient mentions that he spent the last semester working in Peru. Based on her past location what should you include in your differential?

a) Paracoccidioides brasiliensis
b) Coccidioides immitis
c) Histoplasma capsulatum
d) Blastomyces dermatitidis
a) Paracoccidioides brasiliensis
An HIV positive patient presents with raised white plaques on her tongue and gums. You suspect a _______ infection.

a) Cryptococcosis
b) Mucormycosis
c) Candidiasis
d) Aspergillosis
c) Candidiasis
All of the following are dimorphic fungi EXCEPT?

a) Histoplasma capsulatum
b) Candida Albicans
c) Paracoccidioides brasiliensis
d) Sporothrix schenkii
e) Cryptococcus neoformans
e) Cryptococcus neoformans
A first-year infectious disease resident is excited because he has diagnosed a case of pneumocystis. Remembering that P. jiroveci is a fungus, he administers nystatin. Why would you, as the attending, disagree with this?

a) Nystatin is a statin drug, used only for lowering serum LDL levels
b) Nystatin blocks peptidoglycan synthesis, and thus is only good for bacteria
c) Nystatin's action is useless against P. jiroveci because the fungus has a thick cell wall
d) Nystatin's action is useless against P. jiroveci because the fungus does not utilize ergosterol
d) Nystatin's action is useless against P. jiroveci because the fungus does not utilize ergosterol
Which pair of organism can cause a life-threatening meningitis?

a) Coccidioides immitis, Cryptococcus neoformans
b) Sporothrix schenkii, Candida albicans
c) Blastomyces dermatitidis, Coccidioides immitis
d) Histoplasma capsulatum, Pneumocystis jiroveci
e) Trichophyton rubum, Sporothrix schenkii
a) Coccidioides immitis, Cryptococcus neoformans
Which clinical feature would distinguish Madurella grisea from an otherwise identical chromomycosis?

a) Localized, crusty abscesses
b) Madurella's sensitivity to anti-fungal medication
c) Colored granules in Madurella grisea exudate
d) Sinuses found in chromomycosis
e) Urease positive cultures
c) Colored granules in Madurella grisea exudate
Histoplasma capsulatum:

a) Is found only in Central America
b) Is an opportunistic, systemic fungus
c) Is detected by positive culture on Thayer-Martin agar
d) Is the only fungus to exhibit intracellular parasitism
e) Is known for its thick capsule, made especially clear when stained with India ink
d) Is the only fungus to exhibit intracellular parasitism
What is the most commonly diagnosed parasitic intestinal disease in the United States?

a) Amebic dysentery
b) Giardiasis
c) Cryptosporidiosis
d) Malaria
e) Trichomoniasis
b) Giardiasis
The following pathogens are all transmitted via ingestion EXCEPT:

a) Entamoeba histolytica
b) Giardia lamblia
c) Cryptosporidium
d) Trichomonas vaginalis
e) Toxoplasma gondii
d) Trichomonas vaginalis
A 12 year old patient presents with anemia. After routine workup she is found to be vitamin B12 deficient. The cause is identified as a parasite living in her small intestine. What foods would you suspect that she got this parasite from?

a) Pork
b) Beef
c) Crab
d) Snail
e) Fish
e) Fish
Rebecca Adler, a 29-year old preschool teacher, collapses in her classroom from a seizure. Wilson tries to get House to take the case, but House refuses until Wilson claims that Adler is his cousin. House is forced to agree to work longer in the hospital clinic in order to finish a routine MRI scan which yields several cysts in Rebecca's brain. Foreman and Cameron break into the patient's house and discover that she has eaten _________, making them suspect that she may be infected by _________.

a) beef/Taenia saginata
b) pork/Taenia solium
c) fish/Diphyllobothrium latum
d) crab/Paragonimus westermani
b) pork/Taenia solium
House is confronted by a Kalvin, a flamboyant gay man who demands treatment when other doctors diagnose him with AIDS. House quickly concludes his health problems stem from AIDS, but Kalvin claims that tests show that AIDS is not causing the new symptoms. After a brief struggle Kalvin collapses into anaphylactic shock. The cause of anaphylactic shock was House hitting Kalvin in the chest with his cane rupturing several cysts belonging to what organism?

a) Taenia saginata
b) Taenia solium
c) Echinococcus granulosis
d) Clonorchis sinensis
e) Schistosoma japonicum
c) Echinococcus granulosis
What is the most common intrauterine viral infection?

a) Human Cytomegalovirus
b) Herpes Simplex Virus type 2
c) Human papillomavirus
d) Human Immunodeficiency Virus
a) Human Cytomegalovirus
An autopsy is performed on a 35 year old male who was found dead in his remote Georgia cabin. The autopsy showed that several neurons from his brain had an oval Negri body. Upon this discovery, an electron micrograph is performed and bullet shaped viruses are found. What most likely caused this infection?

a) Eating an undercooked ham sandwich on his way to the cabin.
b) Being bitten by a raccoon.
c) Not washing his hands after deficating in the woods.
d) Being coughed on by a hiker he met earlier that week.
b) Being bitten by a raccoon.
A 26 year old black female presents in the ER with pharyngitis, lymphadenopathy and fever. The attending suspects that she has infectious mononucleosis, but is perplexed that tests show that the patient has not been exposed to Epstein-Barr Virus. What reminder to the attending would be the most helpful?

a) Viruses are hard to detect and are often missed.
b) These are not the symptoms of infectious mononucleosis.
c) Epstein-Barr Virus does not cause infectious mononucleosis.
d) Human cytomegalovirus can also cause infectious mononucleosis.
e) Reminding attendings should never be done for fear of their wrath.
d) Human cytomegalovirus can also cause infectious mononucleosis.
A 14 year old Hispanic child presents to the ER with a fever and sore throat. On physical examination, you find a rash that covers his entire body. His mother admits to you that it started on his forehead and she panicked when she saw it spreading. The progression of the rash makes you suspect what viral infection?

a) Mumps
b) HCMV
c) Measles
d) German Measles
e) Rabies
c) Measles
An 80 year old woman is giving you an unabridged family history of all the medical problems that have plagued her family. She is describing her father, who helped construct the Panama Canal, but had to stop suddenly because he became extremely ill. She tells you that in his journal he describes himself as turning yellow. How did her father get sick?

a) Being bitten by a mosquito
b) Unsafe sex
c) Drinking contaminated water
d) Eating undercooked food
e) Being coughed on in the close quarters of the work camp
a) Being bitten by a mosquito
A 5 year old comes into your clinic with an irate mother who tells you that her insolent child refuses to stop scratching his backside.

What is the most likely cause of the child's backside itching?

a) Pinworm
b) Giant Roundworm
c) Strongyloides
d) Hookworms
e) Taenia solium

How did the 5 year old get this parasite?

a) Ingesting the parasite after playing with another child who was infected
b) Mosquito bite
c) Tick bite
d) Swimming in the pond near their summer home
e) Eating poorly cooked food
a) Pinworm

a) Ingesting the parasite after playing with another child who was infected
A friend of yours has returned from vacationing in Morocco. He complains of abdominal pain as well as intestinal obstruction. You suspect that he has an infection of Ascaris lumbricoides.

The common name for Ascaris lumbricoides is?

a) Whipworm
b) Pinworm
c) Roundworm
d) Hookworm
e) Threadworm

How did the patient contract this infection?

a) Walking around barefoot
b) Wading in contaminated water
c) Ingesting the parasite's eggs
d) Mosquito bite
e) Bite from a black fly
c) Roundworm

c) Ingesting the parasite's eggs
A 34 year old female presents to the clinic with leg pain. After doing an muscle biopsy, you find several cysts.

What nematode must you consider in your differential?

a) Taenia solium
b) Dracunculus medinensis
c) Onchocerca volvulus
d) Toxacara canis
e) Trichinella spiralis

How did this woman contract this parasite?

a) Walking around barefoot
b) Wading in contaminated water
c) Eating undercooked pork
d) Mosquito bite
e) Bite from a black fly
e) Trichinella spiralis

c) Eating undercooked pork