Malassezia (Pityriasis) Furfur

Malassezia (Pityriasis) Furfur

<p> Organism Disease Morphology Culture Diagnosis Transmission Pathogenesis Other Malassezia (Pityriasis) furfurTinea Versicolor Requires Fatty Acids (Olive Oil)KOH Preparation – Direct ExaminationSkin discolorationSpaghetti & Meatballs Microsporum audiuiniiMicrosporosis Salmon ColorDirect Examination & CultureAnthrophophilicHair & Skin Fluoresces under BlacklightMicrosporum canisMicrosporosis Mostly Canoe Shaped(pointy) thick rough walled segmented Macroconicia few small smooth micro conidia/Yellow ColorDirect Examination & CultureZoophilicHair & Skin  inflammatoryMicrosporum gypseum Microsporosis Row Boat(rounded ends) thick rough walled segmented conidia/Tan Color/ granularDirect Examination & CultureGeophilicHair & SkinTrichophyton mentagrophytesTrichophytosis Mostly microconidia some small Canoe Shaped smooth wall macroconidica/Many microconidiaDirect Examination & CultureOften ZoophilicChronic Nails,Hair & SkinProduce UreaseTrichophyton rubrumTrichophytosis Mostly Alternating Tear Shaped microconidia some macroconidia/Red Color (especially bottom of colony)Direct Examination & CultureAnthrophophilicHair, Skin & NailsChronic DiseaseTrichophyton tonsuransTrichophytosis Small Balloon & Club ShapedWhite ColorDirect Examination & CultureAnthrophophilicPrimarily Hair – also Skin & NailsTrichophyton verrucosumTrichophytosis Mostly ChlamydosporesWhite ColorDirect Examination & CultureZoophilicPrimarily Hair & Skin - Also NailsEpidermophyton floccsumEpidermophytosis Large Club Shaped segmented conidia No MicroconidiaTan-Olive Drab ColorDirect Examination & CultureAnthrophophilicPrimarily Skin – Rarely NailsCladosporium Chromoblastomycosis SeptateDarkly Pigmented (Brown) Molds(dematiaceous)Culture & HistopathologyGeophilicGranulomatousSclerotic BodiesWangiella dermatitidisPhaeohyphomycosis PleomorphicDarkly Pigmented MoldsDirect ExaminationGeophilicAbscess FormationWorldwideSporothrix schenckiiSporotrichosis Dimorphic (M@30/Y@37)Dirty Grey to Black Mold(older darker)Culture & HistopathologyGeophilicGranulomas & PurulentCommon in Peat Moss Lesions Spread along lymphatics possible pulmonary and disseminated (fungemia) Cigar Shaped Yeast(4-6micrometer) Flowerette(daisy head) Conidia/Septate Subcutaneous N27, mm38, lm9-11 NO Verrucous Lesions Septate Subcutaneous Exophiala jeanselmei Cladosporium Bipolaris Dreschlera(N24, lm9-11) In tropics & subtopics Non painful Verrucous Lesions Often with 2º Infections Slow Growing Subcutaneous Fonsecae Phialophora N24, mm18, lm9-10 Inflammatory Jock Itch Usually Adults Felt Like Septate hyphae Cutaneous N23, mm56, 9-5 Inflammatory Severe Lesions Few Conidia Grows well @ 37º Felt Like to waxy Macro & Micro Conidia Septate Hyphae Cutaneous Mm72 “Black Dots” in hair Felt Like w/ radiating folds Macro & Micro Conidia Septate hyphae cutaneous Mm70, lm9-8 Hard to Treat Floccose Delicate Septate hyphae</p><p> cutaneous N23, mm66, lm 9-9 Athletes Foot Inflammatory Organism Disease Morphology Culture Diagnosis Transmission Pathogenesis Other Histoplasma capsulatumHistoplasmosisDimorphic(M@30/Y@37)White to Tan MacroconidiaGeophilic primary pulmonaryBenign to Disseminated (skin, prostate, bone, and fungemia)Bird/bat DroppingsBlastomyces dermatitidisBlastomycosisDimorphic(M@30/Y@37)White DNA Probe or Yeastprimary pulmonarySuppurative to Granulomatous (fungemia)Cross Reactive with HistoCoccidiodes immitisCoccidiomycosisDimorphic(M@30/Y@37)White to TanComplement Fixationprimary pulmonarySuppurative to GranulomatousSkin Reaction to CoccidiodinCryptococcus neoformansCryptococcosisYeast Only White to PinkMucicarmine – stains capsule redGeophilicCNS – meningitis & encephalitisAssociated with bird droppings and Eucalyptis treeesCandidaCandidiasisYeast OnlyFast growthPseudohyphaeVaginitis & Oral are commonTx w/ amphotericin, fluconazole, or echinocandinsAspergillusAspergillosisMold OnlyGrows Quickly (light to dark green with age)Direct ExaminationAllergicAflatoxin r/t hepatic CancerZygomycetesZygomycosisNon Septate Hyphae/ Grows QuicklyDirect Examination (non-septate)RhinocerebralCan fill and follow path of blood vessels Pulmonary GI Disseminated (not common) Doesn’t grow with cyclohexamide ribbon like growth in Tissue Sporangiophores Opportunistic (Mucor, Rhizopus, Absidia) N39, mm84&87, lm9-18 Bronchopulmonary Fungus Ball Invasive Rhinofacial Cerebral Immunodiffusion Complement Fixation Immunofluoresence (galactomannans) “Fan” shaped Conidia made of phialides w/ chains of conidia Septate Opportunistic Fumigatus, Flavus, Niger, Terreus N38, mm10&78, lm9-17 Inflammation and Hyphal invasion Systemic Cutaneous Subcutaneous Allergic Latex Agglutination KOH+CCwhite Pseudohyphae(except Glabrata) Opportunistic N337, mm16, lm9-16 Pulmonary Disseminated(bone, joint, renal, skin, Fungemia, eye) Latex agglutination KOH India ink Yeast with Capsule mucoid or dry colony Narrow bud base CAPSULE Systemic N35, mm22, lm9-16 Spherules Disseminated joints and skin Southwest desert soil Immunodiffusion KOH+CCwhite Fluffy Environmental Arthroconidia environment(bracelet like)/ tissue Spherule with endospores /Septate “Valley Fever” systemic </p><p>N31, mm20, lm9-15 Complement Fixation Immunodiffusion KOH+CCwhite Floccose Large yeast – wide bud base Slender Variale length Conidiophores Septate Systemic </p><p>N30,mm12, lm9-14 Agglutinateion (acute) Precipitation Complement Fixation Immunofluorescence (dissemination) Floccose</p>

View Full Text

Details

  • File Type
    pdf
  • Upload Time
    -
  • Content Languages
    English
  • Upload User
    Anonymous/Not logged-in
  • File Pages
    2 Page
  • File Size
    -

Download

Channel Download Status
Express Download Enable

Copyright

We respect the copyrights and intellectual property rights of all users. All uploaded documents are either original works of the uploader or authorized works of the rightful owners.

  • Not to be reproduced or distributed without explicit permission.
  • Not used for commercial purposes outside of approved use cases.
  • Not used to infringe on the rights of the original creators.
  • If you believe any content infringes your copyright, please contact us immediately.

Support

For help with questions, suggestions, or problems, please contact us