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MT2 > subcutaneous mycoses > Flashcards

subcutaneous mycoses Flashcards

1
Q

Although some are moniliaceous, many are phaeoid

A

Hyphomycetes

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2
Q

Are fungal diseases that affect subcutaneous tissue

A

Hyphomycetes

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3
Q

The result of the traumatic implantation of foreign objects into the deep layers of the skin

A

Hyphomycetes

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4
Q

The causative agents of subcutaneous mycoses are commonly found in ______ or on _______; therefore, agricultural workers are most often affected.

A

soil ; decaying vegetation

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5
Q

Infections are commonly _____ and usually incite the development of lesions at the site of _____.

A

chronic ; trauma

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6
Q

Caused by several infectious agents: Fonsecaea compacta, F. pedrosoi, Phialophora verrucose, Cladophialophora carrionii, and Rhinocladiella aquaspersa

A

Chromoblastomycosis

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7
Q

Chromoblastomycosis is also known as

A

verrucous dermatitidis and chromomycosis

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8
Q

A chronic mycosis of the skin and subcutaneous tissue that develops over a period of months or years

A

Chromoblastomycosis (clin. manifestation)

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9
Q

Chromoblastomycosis Mostly asymptomatic in the absence of secondary complications (_____, _____, ____)

A

bacterial infections, carcinomatous degeneration, and elephantiasis

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10
Q
  • Usually confined to the extremities, often the feet and lower legs, and are a result of trauma to these areas
  • Frequently appear as verrucous nodules that may become ulcerated and crusted
A

Lesions (clin. manifestation of chromoblastomycosis)

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11
Q

Longstanding lesions: _______ surface

A

cauliflower-like

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12
Q
  • Are nonbudding structures occurring singly or in clusters
  • Reproduce by dividing in various planes, resulting in multicellular forms
A

Brown, round sclerotic bodies

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13
Q

Presence of _______ is diagnostic for this disease

A

sclerotic bodies

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14
Q

Occasionally _________ are also seen.

A

short hyphal elements

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15
Q
  • Conidiogenous cells, phaeoid, flask-shaped phialides, with collarettes.
  • Conidia is oval, one-celled, occur in balls at tips of phialides
A

Phialophora verrucosa

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16
Q
  • Primary one-celled conidia formed on sympodial conidiophores
  • Primary conidia function as conidiogenous cells to form secondary one-celled conidia
  • Some conidia are similar to those seen in Cladosporium sp., some are similar to those in Rhinocladiella sp.
A

Fonsecaea pedrosoi

17
Q
  • Similar to F. pedrosoi but with more compact conidial heads
  • Conidia are subglobose rather than ovoid
A

Fonsecaea compactum

18
Q
  • Conidiophores erect, dark, bearing conidia only on upper portion of the tip
  • Conidia elliptic, one-celled, produced sympodially
A

Rhinocladiella aquaspersa

19
Q
  • Erect conidiophores bearing branched chains of one-celled, brown blastoconidia
  • Conidium close to tip of conidiophore, termed shield cell
  • Fragile chains
A

Cladophialophora carrionii

20
Q

an infection of the subcutaneous tissues that arises at the site of inoculation

A

Mycetoma

21
Q

mycetoma caused by bacteria

A

Actinomycotic mycetomas

22
Q

mycetoma caused by fungal agents

A

Eumycotic mycetomas

23
Q

Eumycotic mycetoma agents

A
  • Pseudallescheria boydii
  • Acremonium falciforme/ Fusarium falciforme
  • Madurella spp.
24
Q

Eumycotic mycetoma agent that produces annellides

A

Pseudallescheria boydii

25
Q

Eumycotic mycetoma agent that produces annellides

A

Pseudallescheria boydii

26
Q

Eumycotic mycetoma agent that This isolate is a hyaline, septate, filamentous mold

A

Acremonium falciforme/ Fusarium falciforme

27
Q

madurella spp that grows best at 37°C, with slower growth at 40°C

A

M. mycetomatis

28
Q

madurella spp that only sterile hyphae are observed; optimal growth temperature is 30°C

A

M. grisea

29
Q

Mycotic disease caused by darkly pigmented fungi

A

Subcutaneous Phaeohyphomycosis

30
Q

Fungin associated with Subcutaneous Phaeohyphomycosis

A

Exophiala spp
E. dermatitidis

31
Q

conidia are borne from annelids

A

Exophiala spp

32
Q

forms conidia at the tips of phialides

A

E. dermatitidis

33
Q

chronic infection characterized by nodular and ulcerative lesions

A

Lymphocutaneous sporotrichosis

34
Q

rare condition; commonly recovered from the soil

A

Mucocutaneous sporotrichosis

35
Q

less commonly seen disease; infection is confined to the site of inoculation

A

Fixed cutaneous sporotrichosis

36
Q

sporothrix mold

A
  • Delicate hyaline, septate hyphae
  • Arrange laterally along hyphae or in daisy-like cluster
37
Q

sporothrix yeast

A
  • Oval or elliptical in shape
  • Cigar-shaped forms

MT2 (45 decks)

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