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Clinical Pathology > Microbiology 4 (parasitology) > Flashcards

Microbiology 4 (parasitology) Flashcards

1
Q

modified acid fast positive (3)

A

cryptosporidium
cyclospora
isospora

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2
Q

T. solium proglottid

A

<13 lateral branches

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3
Q

T. saginatum

A

> 13 lateral branches

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4
Q

Entamoeba _____ has ingested RBCs

A

E. histolytica

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5
Q

E. histolytica and E. hartmanii can be distinguished by:

A

E. hartmanii is smaller

E. histolytica ingests RBCs

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6
Q

Entamoeba coli identifying features

A

eccentric karyosome
up to 8 nuclei in cyst
no RBCs inside

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7
Q

Amoeba with iodine-staining vacuole

A

Iodamoeba butschlii

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8
Q

Amoebas with “ball+socket” karyosome

A

Endolimax nana

Iodamoeba butschlii

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9
Q

“napkin ring” lesion mimicking colon CA

A

E. histolytica

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10
Q

how can Naeglaria flowleri be cultured

A

on a lawn of inactivated E. coli

it forms a visible train

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11
Q

non-pathogenic organism that looks like Giardia

A

Chilomastix mesnili

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12
Q

flagellate that causes diarrhea dn is seen as coinfection with Enterobius in children

A

Dientamoeba fragilis

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13
Q

on ddx with leshmania by histology

A

toxoplasma and histoplasma

Leighmania has kinetoplast

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14
Q

culture medium for leishmania

A

Novy-MacNeal-Nicolle

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15
Q

vector for leishmania

A

sandfly

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16
Q

leshmania species that tesnds to disseminate

A

L. donovani

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17
Q

Leishmania species causing mucocutaneous dz

A

L. braziliensis

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18
Q

T.cruzi causes

A

Chagas (heart failure and achalasia)

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19
Q

vector of T.cruzi and inoculation site

A

Reduviid bug

Romana sign on eye

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20
Q

organism with cilia uniformly covering surface

A

Balantidium coli (trophozoite)

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21
Q

location of cryptosporidium parvum

A

adherent to SI enterocyte brush border

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22
Q

location of isopora belli

A

between SI enterocytes

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23
Q

location of microsporidium

A

intracellular in apical portion of enterocyte

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24
Q

clinical of cyclospora

A

fever with watery diarrhea

followed by anorexia/fatigue/weight loss

25
Q

malaria with fever every 48hr

A

P. ovale, P. vivax, P. falciparum

26
Q

malaria with fever every 72hr

A

P. malariae

27
Q

Plasmodium assd with nephrotic syndrome

A

P. malariae

28
Q

Plasmodium assd with CNS dz

A

P. falciparum

29
Q

Plasmodium with true relapse

A

P. vivax

P. ovale

30
Q

P. vivax and ovale infect (younger/older) cells

A

younger (appear enlarged)

31
Q

true malaria relapse due to

A

harboring latent sporozoites (hypnozoites) in liver

32
Q

HbSA protective against

A

P. falciparum

33
Q

Duffy negative protective against

A

P. vivax

34
Q

G6PD def protective against

A

all plasmodia

35
Q

features of P falciparum

A

only ring forms and gametocytes (bananas)
multiple ring forms
applique forms
RBCs not enlarged

36
Q

plasmodium with schuffner dots

A

vivax and ovale

37
Q

babesia vector

A

Ixodes tick

38
Q

frequent coinfection with babesia

A

flavivirus

lyme dz

39
Q

infection assd with plasma cell pneumonitis

A

pneumocystis jirovecii

40
Q

infection assd with rectal prolapse in children

A

Trichuris trichiura

41
Q

egg of trichuris trichiura looks like

A

barrel with corks at both ends

42
Q

egg with rough, mamillated surface

A

Ascaris lumbricoides

43
Q

Loeffler syndrome assd with

A

Ascaris lumbricoides

Strongyloides

44
Q

2 hookworms

A

Necatur americanus

Ancylostoma duodenale

45
Q

How to tell N. americanus and A. duodenale from strongyloides

A

longer buccal cavity

indistinct genital primordium

46
Q

microfilaria found in blood

A

Wucheria bancrofti
Brugia malayi
Loa loa

47
Q

differentiation W. bancrofti from B. malayi, and Loa loa

A

all have sheath
W. bancrofti has no tail nuclei
B. malayi has 2 tail nuclei
Loa loa has continuous row of tail nuclei

48
Q

microfilaria not found in blood

A

Mansonella perstans

Onchocerca volvulus

49
Q

Onchocerca volvulus causes

A

dermatitis, keratitis, corneal opacities

50
Q

Bile duct infectiosn

A

Fasciola hepatica and Fasciolopsis buski (very large eggs)

Clonorchis sinensis

51
Q

Paragonimus wertemanii

A

shellfish

pulmonitis

52
Q

Katayana fever

A

febrile illness caused by schistosoma egg laying

53
Q

Assd with SCC of bladder

A

S. hematobium (distal spine)

54
Q

morphology of egg of Taenia saginata or T. solium

A

radially striated wall, 3 pairs of hooks

55
Q

proglottid that is wider than long, with almond shaped scolex

A

Diphyllobothrium latum

56
Q

most common cestode recovered in US

A

Hymenolepsis nana

57
Q

strongyloides hyperinfection ass with what other infection

A

Lepromatous leprosy

58
Q

Capable of person to person spread

A

Enterobius vermicularis

Hymenolepsis nana

Clinical Pathology (59 decks)

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