Micro pics

Question 1

Answer 1

gram positive lancet shaped diplococci

Streptococcus pneumoniae

Question 2

Answer 2

alpha hemolysis on blood agat: Streptococcus pneumoniae

Question 3

Answer 3

quelling reaction: streptococcus pneumoniae

Question 4

Answer 4

gram positive cocci in cluster

staph aureus

Question 5

Answer 5

bronchopneumonia: patchy ususally involving more than one lobe

caused by many bacterial organisms: S. aureus, H. influenzae, P. aeruginosa, moraxella catarrhalis, legionella pneumonophilia

Question 6

Answer 6

gram negative bacilli

Pseudomonas aeruginosa, Acinetobacter baumanii, H. influenzae, Klebsiella, moraxella catarrhalis

bordetella pertussis

Question 7

Answer 7

green-blue pigment: pyocyanin

Pseudomonas aeruginosa

Question 8

Answer 8

interstitial atypical pneumonia

viral or bacterial: Mycoplasma pneumoniae, chlamydia pneumoniae, RSV, CMV, influenza virus, coxiella burnetti

Question 9

Answer 9

Legoinella pneumophila

consolidation, diffuse interstitial infiltrates, pleural effusion

Question 10

Answer 10

steeple sign: croup

parainfluenza

also: RSV, HMPV, influenza

Question 11

acid fast stain

Answer 11

Mycobacterium tuberculosis

Question 12

Answer 12

seeded appearance

miliary TB

Question 13

Answer 13

oval yeast cells within macrophages

histoplasma capsulatum

Question 14

Answer 14

erythema nodosum

seen in granulomatous diseases: histo, TB, Cocci

GOOD PROGNOSIS: cell mediated imunity is active

Question 15

Answer 15

thick walled yeast cell with SINGLE BROAD BASED BUD

blastomyces

Question 16

Answer 16

granulomatous skin lesions: can be ulcerated (grey to violet)

blastomyces

Question 17

Answer 17

spherule

coccidioides immitis

Question 18

Answer 18

pilot wheel: yeast cells with multiple buds

paracoccidioides brasiliensis

Question 19

Answer 19

submandibular LAD

facial, oral, nasal ULCERS

Paracoccidioides brasiliensis

Question 20

Answer 20

SEPTATE, ACUTE ANGLE branching HYPHAE

radiateing chains of conidia

aspergillus fumigatus

Question 21

Answer 21

single or multiple nodules with or without cavitation

HALO sign: areas of focal hemorrhage around lesion

Aspergillus

Question 22

Answer 22

spread to ORBIT

mucormycosis

Question 23

Answer 23

NONSEPTATE BROAD HYPHAE, RIGHT ANGLE branching

SPORES

mucormycosis

Question 24

Answer 24

penumocystis jiroveci (carinii)

methenamine silver or giemsa stain

Question 25

Answer 25

oval budding yeast with wide capsule, NARROW BASED BUD

cryptococcus neoformans

Question 26

Answer 26

CMV pneumonitis

Question 27

gram stain and acid fast stain

Answer 27

gram positive stain with thin branching filaments

acid fast stain

Nocardia asteroides

Question 28

Answer 28

brain and lung abscesses

nocardia asteroides

(brain abscesses also occur in Mucormycosis)

Question 29

Answer 29

histoplasmosis

Question 30

Answer 30

histoplasmosis

Question 31

Answer 31

gram positive bacillus, pleomorphic, club shaped, palisades, beaded

Corynebacterium diptheriae

Question 32

Answer 32

pseudomembrane: necrotic fibrin, leukocytes, erythrocytes, epithelial cells, and organsism

adheres tightly to underlying tissue and bleeds with scraping

TOXIN induced

can cause mechanical obstruction

Diphtheria

Question 33

Answer 33

Bull neck: cervical lymphadenopathy

Diphtheria

Question 34

Answer 34

thumb sign: epiglottitis

H. INFLUENZAE, H. paraflu, S. pneumoniae, Group A strep

Question 35

Answer 35

otitis media: tympanic membrane bulging and erythematous

S. pneumoniae, H. influenzae, M. catarrhalis