Infectious

Question 1

Splinter haemorrhages, Osler’s nodes, Janeway lesions, Roth spots

Answer 1

Infective endocarditis

Question 2

Retinitis in HIV patient

Answer 2

CMV

Question 3

Rose spots

Answer 3

Typhoid fever

Salmonella typhi

Question 4

Acid-fast bacilli, ZN stain

Answer 4

TB

Question 5

Gohn focus

Answer 5

TB

Question 6

Homeless man

Answer 6

TB

Question 7

Strawberry tongue

Answer 7

Scarlet fever

Group A streptococcus

Question 8

Koplik’s spots

Answer 8

Measles

Question 9

Thick and thin films

Answer 9

Malaria

Question 10

IVDU

Answer 10

Tricuspid regurgitation secondary to staph aureus IE

Question 11

Non-caseating granuloma

Answer 11

Wegener’s, Sarcoidosis, Crohn’s

Question 12

Low CD4 count

Answer 12

HIV

Question 13

Purple spots in a HIV patient

Answer 13

Kaposi’s sarcoma

Question 14

Acute and direct convalescent serology four-fold rising titre

Answer 14

Influenza

Question 15

Urinary antigen positive (3)

Answer 15

Legionella
Strep. pneumoniae
Mycoplasma

Question 16

Infections in asplenic patients (3)

Answer 16

Encapsulated bacteria

Strep. pneumoniae
Haemophilus influenzae
Neisseria meningitidis

Question 17

Maculopapular rash

Answer 17

HIV seroconversion

Question 18

India ink stain

Answer 18

Cryptococcus in HIV

Question 19

Gram negative obligate intracellular organism

Answer 19

Chlamydia

Question 20

Flask-shaped ulcers, PAS-positive trophozoites

Answer 20

Amoebiasis

Question 21

Calcification in the brain after HIV

Answer 21

Toxoplasmosis

Question 22

Boat-shaped cells

Answer 22

PCP

Question 23

Squamous cell carcinoma of bladder and infected

Answer 23

Schistosomiasis

Question 24

Pseudohyphae

Answer 24

Candidiasis

Question 25

Red papules are evident in the web spaces

Answer 25

Scabies

Question 26

Sewer worker

Answer 26

Leptospirosis

Question 27

Mozzarella pizza on fundoscopy

Answer 27

CMV retinitis

Question 28

Osteomyelitis in sickle cell patient (organism)

Answer 28

Salmonella

Question 29

TB drug side effects

Answer 29

``` Red-green colour blindness Peripheral neuropathy Gout Red urine and tears TB drug side effects ``` Red-green colour blindness - ethambutol Peripheral neuropathy - isoniazid Gout - pyrazinamide Red urine and tears - rifampicin

Question 30

Causes of rigors (4)

Answer 30

Cholangitis Pneumonia Pyelonephritis Sepsis

Question 31

Bat bite

Answer 31

Rabies

Question 32

Diplopia + photophobia + cardiorespiratory failure after camping

Answer 32

Botulism

Question 33

Brushfire on fundoscopy

Answer 33

CMV retinitis

Question 34

Owl's eyes intranuclear inclusions

Answer 34

CMV

Question 35

Bird droppings (2)

Answer 35

Chlamydia psitacci | Campylobacter jejuni

Question 36

Lymphogranuloma venerum

Answer 36

Chlamydia trachomatis

Question 37

Painless chancre (genital ulcer)

Answer 37

Syphillis

Question 38

IE in community

Answer 38

Strep viridans

Question 39

IE in hospital

Answer 39

Staph. epidermidis

Question 40

Meningitis-causing organism resistant to cephalosporins

Answer 40

Listeria