IDS Flashcards
Cells seen in measles
Warthin-Finkeldy (multinucleated giant cells), and also Koplik spots (opposite 2nd upper molars at exit of Stensen’s duct)
Herpes simplex
Cowdry Type A (pink to purple intranuclear inclusions)
Varicella zoster (chickenpox)
Dewdrops on a rose petal
CMV
Owl’s eye (intranuclear basophilic inclusions surrounded by clear halo)
EBV
Mononucleosis, burkitt’s lymphoma, nasophrayngeal CA, B-cell non-Hodgkin’s lymphoma
Heterophile (Monospot) negative
CMV
Heterophile (monospot) positive
EBV
Pseudomembrane
Diphtheria
Granulomatosis infantiseptica
Listeria monocytogenes (gram positive intracellular bacteria)
Capsule of Bacillus anthracis
Only non-polysaccharide capsule, composed of D-glutamate peptides
Fleur-de-lis pattern of necrotizing pneumonia (pale necrotic center with red, hemorrhagic periphery)
Pseudomonas
Perivascular blue haze
Pseudomonas
Buboes
Yersinia pestis
Organism causing chancroid
Haemophilus ducreyi
Organism causing granuloma inguinale
Klebsiella granulomatis
Painful, prominent, non-indurated buboes
Haemophilus ducreyi (chancroid)
Beefy red ulcer with indurated borders
Klebsiella granulomatis (granuloma inguinale)
Gram negative coccobacilli
BOTH chancroid and granuloma inguinale)
Donovan bodies
Granuloma inguinale (may dove sa aking groin / inguinal area)
Produced by APCs for TH1 differentiation
IL 12
Produced by TH1 to activate macrophages
IFN-gamma
Cytotoxic T-cells
MHC I, CD8, Th2
Helper T cells
MHC II, CD4, Th1 and Th17
Focus of caseation necrosis in TB?
Ghon focus
Ghon focus + lymph nodes
Ghon complex
Healed Ghon focus leading to fibrosis and/or calcification
Ranke complex
Secondary or reinfection of TB, tends to be cavitary
Simmon focus
Most common form of extrapulmonary TB
TB adenitis (scrofula)
Most commonly affected segment in GITB
Ileum
Disseminated intracellular infection in ICC individuals (ex AIDS)
Mycobacterium avium intracellulare complex (MAC)
Two types of leprosy
Paucibacillary/tuberculoid and multibacillary/lepromatous
Lipid laden macrophages seen in lepromatous leprosy
Lepra cells (macrophages) with globi (AFB)
Lesion of primary syphilis
Chancre
Causative agent of syphilis
Treponema pallidum