Exam 1 - Mycology Characteristics Flashcards
spaghetti and meatballs
Tinea versicolor
Mild type and deep pustular type
Tinea barbae
Keloids and kerions
Tinea barbae
Tinea capitis
Microconidia
Trichophyton species
Males before puberty
Females after puberty
Tinea capitis
gray-patch ringworm
Tinea capitis
Chains of macroconidia and hyphae
Tinea capitis
yellowish-brown, cup-shaped skin crusts
Tinea favosa (capitis)
Spread circularly
Tinea corporis
Extensive hyperkeratosis
Tinea corporis
Annular type and vesicular type
Tinea corporis
mycelia and conidiospores
Tinea corporis
club-shaped macroconidia with rough walls
Tinea corporis (microsporum canis)
Erythema and intense itching occur at first with older lesions becoming leather-like
Tinea cruris
club-shaped macroconidia with smooth walls
Tinea cruris (Epidermophyton)
does not produce microconidia
Epidermophyton floccosum
Infections are localized to keratinized skin
Tinea pedis
secondary bacterial infections develop.
Tinea pedis
hyphae and macro- or microconidia
Tinea pedis
large tumor-like areas of infection
Lobomycosis
thick-walled, globose-to- lemon-shaped budding yeasts joined by short tubes (chains of yeasts)
Lobomycosis
This yeast cannot be cultured
Lobomycosis
local lesions in the lymphatics
Sporotrichosis
Asetroid bodies and cigar shaped budding yeast
Sporotrichosis
large emboli in the brain, spleen and kidneys
Candidiasis
Heart valve replacement
Candidiasis
Endocarditis
Candidiasis
chains of oval-to-globose, budding yeast cells or pseudohyphae with constrictions at septa and with oval blastospores near the septa.
Candidiasis
true pathogen that is associated with flowering eucalyptus trees
Cryptococcus gattii
transmitted by inhalation of airborne blastospores from soil or bird (pigeon) droppings
Cryptococcosis
Central nervous system involvement (meningoencephalitis) is the most frequently diagnosed form
Cryptococcosis
Attacks the bones
- Cryptococcosis
- Hystoplasmosis
Nigrosin staining of cerebral spinal fluid or exudate shows globose yeast cells with thick polysaccharide capsules forming halos around the cells.
Cryptococcosis
The presence of dsRNA mycoviruses represses the formation of toxins
Aspergillosis
invasion of blood vessels
- Aspergillosis
- Mucormycosis
fungus balls
Aspergillosis
bronchial plugging
Aspergillosis
rhinocerebral proptosis (protrusion of the eyeball)
- Aspergillosis
- Mucormycosis
growths on the heart valves
Aspergillosis
Demonstration of conidial structures or acute-angle branching, septate hyphae in stained
preparations of sputum or bronchoalveolar lavage
Aspergillosis
sheath around the hyphae
Mucormycosis
are true medical emergencies
Mucormycosis
Central nervous system infections
Mucormycosis
Demonstration of broad, branching, non-septate
or sparsely septate hyphae with right angle branching in stained preparations of biopsy material
Mucormycosis
the disease is found in domestic animals and rodents but is not transmitted from person-to-person or by animals
Coccidioidomycosis
Risk of infection is greatest in pregnant women and non-whites and is most common in the summer months.
Coccidioidomycosis
pleuritic pain
Coccidioidomycosis
desert bumps
Allergic coccidioidomycosis
valley fever
Pulmonary coccidioidomycosis
Arthritis can occur and is known as desert rheumatism
Coccidioidomycosis
Staining of tissue demonstrates thin-walled spherules with endospores
Coccidioidomycosis
called summer fever in children
Mild pulmonary histoplasmosis
oropharyngeal ulcer formation on mucous membranes that become granulomatous
Mucocutaneous histoplasmosis
Fever, anemia, meningitis, hepatosplenomegaly, leukopenia, septic shock and weight loss
Systemic histoplasmosis
Exudate cells contain extra- or intracellular oval yeasts with prominent bud scars and thin walls
Histoplasmosis
The fungus is thermally dimorphic
Histoplasmosis
An enzyme immunoassay of polysaccharide antigen from urine is used
Histoplasmosis
