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Flashcards

Mycology

Jaylene Brown English 43 cards

Cards in this deck (43)

  1. 1Dermatophyte Athlete's foot, nail & skin infections Macroscopic: brownish yellow to olive gray, reverse is orange to brown w/ yellow border, flat & grainy texture becomes grooved and velvety w/ age, small in diameter Microscopic: Club-shaped, thin-walled macroconidia (beaver's tail) in singles & clusters, no microconidiaEpidermophyton floccosum
  2. 2Dermatophyte: Skin & ectothrix hair infections, does not cause nail infections Infected hairs fluoresce under Wood's lamp Macroscopic: fluffy & white w/ reverse side w/ lemon-yellow pigment Microscopic: numerous rough, spindle shaped macroconidia w/ tapered ends, club-shaped microconidiaMicrosporum canis
  3. 3Dermatophyte: Skin & ectothrix hair infections, does not cause nail infections Macroscopic: Tan to buff colonies, brown to red pigment can form beneath, powdery, granular appearance Microscopic: Rough, thin-walled, elliptical macroconidia, distal end may have thin filamentous tail, few club-shaped microconidiaMicrosporum gypseum
  4. 4Dermatophyte: Skin & ectothrix hair infections, does not cause nail infections Infected hairs fluoresce under Wood's lamp Macroscopic: cottony white, no reverse pigment Microscopic: Rare irregularly shaped macroconidia, microconidia rare, appear singly along the hyphae & are club-shapedMicrosporum audouinii
  5. 5Dermatophyte, most common cause of Athelete's foot, infects body, nails, hair (exothrix) Microscopic: Smooth, cigar-shaped macroconidia, produced singly, microconidia are globose to teardrop-shaped, "grape-like"Trichophyton mentagrophytes
  6. 6Dermatophyte, infects skin & nail, & hair (ectothrix) Macroscopic: white on surface, may be yellow to red Microscopic: No macroconidia, peg-shaped microconidiaTricophyton rubrum
  7. 7Dermatophyte: leading cause of tinea capitis in children, skin, nail, & endothrix hair infections Macroscopic: Form rust-colored pigment on reverse side Microscopic: Variable shaped microconidia from round to peg-shapedTrichophyton tonsurans
  8. 8Causes tinea versicolor Lesions fluoresce w/ Wood's lamp Macroscopic: Will not grow on routine media, must be layered w/ olive oil, grows as a yeast Microscopic: "spaghetti & meatballs", round to oval cells in clusters w/ short, angular hyphaeMalassezia furfur
  9. 9Causes black piedra Macroscopic: slow growth, dark green to black glabrous colony Microscopic: dark thick-walled hyphae w/ swellings, asci and ascospores may be presentPiedraia hortae
  10. 10Causes white piedra Macroscopic: cream-colored, yeast-like colonies Microscopic: Blastoconidia & arthroconidiaTrichosporon
  11. 11Causes tinea nigra (black ringworm) Macroscopic: shiny, yeast-like colonies that start off brown then turns olive black Microscopic: septate hyphal elements & budding cellsHortaea werneckii
  12. 12Macroscopic: grayish brown to grayish violet colonies Microscopic: oval conidia singly at tops of cells (annellides), hyaline, septate, filamentous hyphaePseudoallescheria boydii/Scedosporium apiospermum
  13. 13Macroscopic: slow growth, initially white to yellow, turns brown w/ ageMadurella mycetomatis
  14. 14Causes mycetoma & phaeohyphomycosis Macroscopic: brownish greenish black, smooth & becomes velvety Microscopic: yeast-like cells become hyphae, conidiophores are annellides conidia are oval & group near end of conidiophoreExophiala jeanselmei
  15. 15Macroscopic: small & white, turning leathery/velvety & darker w/ age, reverse side is dark in center w/ light periphery, yeast form is cream or tan, smooth Microscopic: small, cigar-shaped yeast cells, thin delicate hyphae w/ conidia in a rosette pattern "daisy head" Must convert from mycelial form to yeast form to confirm IDSporothrix schenckii
  16. 16Macroscopic: Dark to greenish brown to black, velvety/granular, reverse side is black Microscopic: septate brown hyphae, conidiophores have vase-shaped phialides w/ cuplike collarette, round to oval conidia accumulate at top of vasePhialophora verrucosa
  17. 17Macroscopic: Variable, "white fuzzy" Microscopic: coarse septate branched hyphae, barrel shaped arthroconidia (extremely infectious), no yeast phase, forms spherules in tissue Other tests: DNA probes, immuno-diffusionCoccidioides immitis
  18. 18Macroscopic: slow growth, white & cottony, turning browntan w/ age Microscopic: septate hyphae w/ short/long conidiaphores, round/pear shaped conidia "lollipop" Yeast cells have "broad-based bud"Blastomyces dermatitidis
  19. 19Macroscopic: Slow growth, white to brown, fine dense cottony texture, reverse is white Microscopic: Septate hyphae w/ round to pear shaped microconidia which can be spinyHistoplasma capsulatum
  20. 20Macroscopic: white heaped compact, folded glabrous, turns brown w/ age Microscopic: septate hyphae w/ intercalary & terminal chlamydospores, few microconidia, large round thick-walled cells w/ single or multiple buds (ship's wheel)Paracoccidiodes brasiliensis
  21. 21Macroscopic: green aerial & reddish brown hyphae, red diffusible pigment Microscopic: yeast-like cellsPenicillium marneffei
  22. 22Rapid growth Macroscopic: wooly gray, fluffy, reverse is colorless Microscopic: aseptate hyphae, branching sporangiosphores, pear-shaped sporangia w/ collaretteLichtheimia (Absidia) spp.
  23. 23Rapid growth Macroscopic: cottony, initially white but turns gray Microscopic: sporangiosphores are erect, several vesicles w/ sporangioles, may be covered in long, fine spinesCunninghamella spp.
  24. 24Rapid growth, usually a contaminant Macroscopic: cottony candy-like white fluff, becomes gray, fills plate, reverse is white Microscopic: wide aseptate hyphae, no rhizoids, long, branches sporangiosphore, terminal round sporangia, round/oblong spores, columella sometimes w/ collaretteMucor spp.
  25. 25Rapid growth, most common cause of zygomycosis Macroscopic: Fills plate w/ cotton-candy like white fluff, becomes gray, reverse is white Microscopic: wide aseptate hyphae, rhizoids under sporangiosphores, which are long w/ terminal dark round sporangia, oval spores, columella left after sporangial wall dissolvesRhizopus spp.
  26. 26Rapid growth Macroscopic: Initially white, become gray w/ age Microscopic: Erect sporangiosphores, each w/ large columella w/ merosporangia w/ stacks of sporangiosporesSyncephalastrum spp.
  27. 27Rapid growth Macroscopic: velvety, yellow to green/brown, reverse is goldish to red/brown Microscopic: Loosely radiate phialides on most of vesicle, septate hyphae, rouch, spiny conidiosphoreAspergillus flavus
  28. 28Rapid growth Macroscopic: velvety, white, then dark greenish to gray, reverse is white to tan Micrscopic: Conidiosphores are short & smooth, septate hyphae, phialides on upper two thirds of vesicle, round condidia in chainsAspergillus fumigatus
  29. 29Macroscopic: cottony, flat & white, covered w/ black conidia (granular texture), reverse is colorless to ivory or pale yellow Microscopic: hyaline septate hyphae, conidiophore w/ flask-shaped phialides w/ conidia in columnsAspergillus niger
  30. 30Moderate growth rate Macroscopic: hyaline, can develop pink, gray, or tan pigment Microscopic: simple, wide-based, single celled condidia, arthroconidia may be seenChrysosporium spp.
  31. 31Rapid growth Macroscopic: white cottony colony, becomes lavender, reverse side is light Microscopic: septate hyphae, conidiosphores single or branching, banana or sickle-shaped macrocondia, , single-celled microconidia in ballsFusarium spp.
  32. 32Macroscopic: white to cream, yeast-like Microscopic: abundant arthroconidiaGeotrichum spp.
  33. 33Macroscopic: granular to velvety colonies in shades of tan, brownish gold, or mauve Microscopic: spindle-shaped conidia, longer phialides, verticulate patternPaecilomyces spp.
  34. 34Rapid growth Macroscopic: initially white, becoming powdery & brown w/ tan periphery, reverse is tan w/ dark center Microscopic: septate hyphae, w/ short branched conidiophores w/ tenpin-shaped annellides that are in brush-like groupsScopulariopsis spp.
  35. 35Macroscopic: intensely green & granular Microscopic: hyaline hyphae w/ yellow green to green pathces of conidia formed on clusters of tapering phialidesTrichoderma spp.
  36. 36Rapid growth Macroscopic: gray & wooly when young, turns dark greenish black or brown, black reverse side Microscopic: Septate hyphae, dark club-shaped conidia w/ vertical & horizontal septations, tips are narrower than baseAlternaria spp.
  37. 37Macroscopic: darkens w/ time Microscopic: hyaline hyphae w/ hyaline conidia, becomes more dark w/ age, breaks up into arthroconidia w/o conidiaAureobasidium spp.
  38. 38Microscopic: pineapple shaped, curled hairs or setaeChaetomium spp.
  39. 39Moderate growth Macroscopic: powdery/velvety, heaped or folded, dark gray green to black, reverse is black Microscopic: dark, septate hyphae, short chains of 1-4 blastoconidia arising from forked conidiophoresCladosporium spp.
  40. 40Microscopic: Multicelled conidia, crescent shaped w/ 3-5 cellsCurvularia spp.
  41. 41Macroscopic: gray to brown colony Microscopic: black fruiting bodies that are globose & lined inside w/ short conidiophoresPhoma spp.
  42. 42Rapid growing Microscopic: barrel-shaped conidia w/ transverse & longitudinal cross-walls Macroscopic: velvety, green w/ light borderPithomyces spp.
  43. 43Rapid growth Macroscopic: olive to brown Microscopic: conidiophores w/ dark, multicelled conidia w/ angular cross wallsUlocladium spp.

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Flashcards on Mycology, created by Jaylene Brown on 12/04/2020.
Created by
Jaylene Brown · Apr 2020
Updated
Apr 16, 2020
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