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Mycology: Hyaline and Dematiaceous Fungi (Online CE Course)

(based on 160 customer ratings)

Elmer W. Koneman, MD

Mycology: Hyaline and Dematiaceous Fungi uses an interrogative, question-and-answer, approach to direct and instruct the participant in identifying hyaline and dematiaceous fungi. Numerous images enhance the descriptions of identifying characteristics by illustrating the appearance of fungal colonies on media and microscopic appearance. The course also identifies sources of infection and associated diseases. This course is appropriate for laboratory professionals and students in clinical laboratory science programs who want to increase their understanding of mycology including microscopic and colony appearance and isolate identification.

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Continuing Education Credits

P.A.C.E.® Contact Hours (acceptable for AMT, ASCP, and state recertification): 1.5 hour(s)
Course number 578-061-16, approved through 7/31/2018
Florida Board of Clinical Laboratory Personnel Credit Hours - General (Microbiology/Mycology/Parasitology): 1.5 hour(s)
Course number 20-547791, approved through 9/1/2018

Objectives

  • Identify hyaline mold isolates by observing the appearance of the colony on agar plates and through microscopic appearance.
  • Discuss various sources of fungal infections and the diseases that are associated with hyaline and dematiaceous molds.
  • Distinguish between saprophytic hyaline molds and dimorphic fungi by performing specific laboratory procedures.
  • Define these terms that apply to fungi and are used to identify specific species: sporulation, conidia, conidiophore, hyphae, phialide.
  • Identify dematiaceous molds by observing characteristic structures and their rate of growth.

Customer Ratings

(based on 160 customer ratings)

Course Outline

Click on the links below to preview selected pages from this course.
  • Hyaline Molds
      • Match each hyaline mold from the drop-down list to its corresponding colony and microscopic description. The mold colonies are illustrated in the imag...
      • Match each hyaline mold from the drop-down list to its corresponding microscopic and colony description. The microscopic appearance of the molds are i...
      • Match each hyaline mold from the drop-down list to its corresponding colony and microscopic description. The mold colonies are illustrated in the imag...
      • Match each of the names of the fungi listed in the left column with its most likely associated disease listed in the right column.
      • Match each of the names of the hyaline molds listed with the environmental conditions or natural objects with which it is most likely associated.
      • Match the names of each of the species of hyaline molds listed with the appropriate category.
      • Match the names of each of the species of hyaline molds listed with the appropriate category.
      • Match the names of each of the species of hyaline molds listed with the appropriate taxonomic category.
      • Match the names of each of the fungi listed below into the appropriate category indicating the classification of infection with which it is most commo...
      • The microscopic features shown in this image is of a fungus commonly associated with:
      • Based on the structures observed in this image, the most probable species of the fungus recovered from an induced sputum specimen is:
      • Illustrated in this image is a "green lawn" colony of Gliocladium species. What is the other hyaline mold that produces this type of colony?
      • The fungus illustrated in this image was recovered from an induced sputum specimen from a 74-year-old man with chronic obstructive pulmonary disease. ...
      • The dermatophytic fungus shown in this image was recovered from a ringworm lesion of the skin on the back of the hand of an 8-year-old boy. What is th...
      • An Aspergillus species was recovered from a sputum specimen of a patient with X-ray evidence of fungal pneumonia. Microscopic examination did not perm...
      • What is the identification of the hyaline mold shown in this image?
      • The differentiation between Aspergillus species and Scedosporium species may be difficult when only hyphal elements are observed in stained tissue sec...
      • A dermatophyte that produces thin-walled, two or three-celled macroconidia, and no microconidia, most likely belongs to which genus?
      • The spores produced by telomorphic forms of Aspergillus glaucus are:
      • The bare fruiting heads shown here, characteristic of Aspergillus niger, demonstrate a spherical vesicle with phialides positioned around the entire c...
      • A dull white fungus, turning mouse gray on maturity, was recovered from material aspirated from a bone cyst in the upper femur. Based on the microscop...
      • The "birds on a fence" arrangement of uniform-sized, tear-shaped microconidia is characteristic of:
      • The image demonstrates the fruiting heads of Trichoderma species. Note the single, long, tapered phialides (red arrows), extending laterally from eith...
      • Illustrated here is a single conidium of Microsporum canis. Note that the hilar cell appears fractured (shorter red arrow), where it was released from...
      • The hyaline saprobic fungus that has microscopic features similar to the mold form of Histoplasma capsulatum is:
      • The hyaline saprobic fungus that has microscopic features similar to the mold form of Coccidioides immitis is:
      • Several saprophytic, hyaline molds have microscopic characteristics that mimic the mold forms of the dimorphic fungi (Histoplasma capsulatum, Blastomy...
      • The most helpful feature in differentiating the Zygomycetes from the other hyaline molds in the clinical mycology laboratory is:
  • Dematiaceous Molds
      • Match each of the names of the fungal species listed with the corresponding identifying structures illustrated in the images:
      • Match the names of each of the fungal species listed in the drop-down box with the corresponding identifying structures shown in the images:
      • A presumptive identification of the four genera of slower growing pathogenic dematiaceous molds can be made by observing specific types of conidiation...
      • Match the name of each dematiaceous fungus listed in the drop-down box with its most likely disease.
      • Match the name of each fungal species listed with its most likely corresponding morphologic features.
      • Match the name of each fungal species listed in the drop-down box with its most likely corresponding morphologic feature.
      • Match the names of each of the fungi listed with its appropriate category.
      • Match the names of each of the fungi listed with its appropriate category depending upon whether the multi-celled macroconidia are divided by both lon...
      • Match the names of each of the fungi listed with its appropriate category indicating the degree of pathogenicity.
      • The fungal species most likely associated with the granulomatous infection seen in this image, illustrating segmented, dark brown-staining grains with...
      • The infrequently encountered mold that is represented by the image begins as a gray-white colony that blackens with maturity as the hyphae become dark...
      • The multi-celled conidia of this dematiaceous mold are divided into cells by what are called distosepta (pseudosepta), indicating that the individual ...
      • The oval or curved multi-celled, dark-staining macroconidia divided by transverse septa only is characteristic of:
      • What is the type of sporulation of the dematiaceous mold that is shown in this image called?
      • Of the following dematiaceous fungi, the black, suede-like colony illustrated here, reaching no larger than the size of a dime after 7 days incubation...
      • The dematiaceous colony illustrated here grew to a diameter of 3 - 4 cm in 5 days. The dematiaceous fungus that can be ruled out is:
      • The dematiaceous fungus that may produce both acrotheca and rhinocladiella types of sporulation is:
      • Saprophytic Cladosporium species may be difficult to differentiate from Cladosporium trichoides (Xylohypha bantianum) in culture as both produce chain...
      • The black yeast colony illustrated in this photograph may represent any of the following dematiaceous molds except:
      • The chain of conidia illustrated in this photomicrograph, with the deep-staining truncated bases, are called annelloconidia, and are most characterist...
      • In this image are observed several background dematiaceous hyphae within which is seen a long, flask-shaped, tapered phialide (arrow) that has a flat ...
      • The disease with which the dematiaceous fungus illustrated in this image is most likely associated is:
      • The dematiaceous conidium shown in this image was obtained from a tiny portion of dark colony that grew to maturity in six days. Spores incubated in a...
      • The chief microscopic feature possessed by Ulocladium species by which it can be differentiated from the close look-alike Stemphilium species is:
      • The etiologic agent of the superficial skin infection tinea niger palmaris (plantaris) is:
  • References
      • References
1034016h
1034028h
2892048d
1034024h

Keywords

These are the most common topics and keywords covered in Mycology: Hyaline and Dematiaceous Fungi:

jeanselmei fence phaeohyphomycosis uniform-sized globose dark-staining fruiting epicoccum roughened fumigatus mycotic germ scales hyphae histoplasma flavus sporothrix trichoides macroconidium innate wernickii walled grain sac-like abscesses boomerang brumptii sack-like nigrospora thickened rose macroconidia septa clavatus mycetoma truncated phialides incubation cleistothecia soil stemphylium hematologic dermatophytes apron drechslera fusarium bird pigmented laterally penicillium mycelium bantianum tinea conidia fungi nipple-like annelloconidia phialophora sporulation drop-down phaeoannellomyces lawn circumferentially dermatophyte fonsecaea asci genus culture gypseum spindle-shaped x-ray downy laboratory nidulan malbranchia pneumonia dermatitidis boydii phialide rhinocladiella bent differential sporangia scopulariopsis conidiophores multi-celled abscess infection fungus microsporum brain niger genera single-celled saprophytic spore-infected verrucosa urn-shaped blastomyces yeast-like alternately epidermophyton paecilomyces contaminant hilar conidiation ulocladium cyst conidium arthroconidia mount broadly zygomycetes geniculate clinical debilitated richardsiae hyaline vesicle conidiophore stemphilium photomicrograph acremonium trichoderma capsulatum distosepta diseases rectangular-shaped colony aspergillus pedis morphologic identifying sympodially sepedonium stick dictyospores amorphic ascosporogenous immunologic keratitis sputum chrysosporium mentagrophytes granular longitudinal mucor brown-black saucer-like cladosporium hyphal aureobasidium dimorphic exophiala xylohypha subcutaneous stick-shaped annellides pullulan curvularia rubrum exserohilum pedrosoi septation circumference profusion inoculated microconidia bale scedosporium ascospores terreus vegetative aseptate bipolaris gliocladium sinusitis identification boomerang-shaped dematiaceous apiospermum cerebral vesicles pathogenic trichophyton ball-like cunninghamella acrotheca telomorphic commensal chromomycosis schenckii disease arthroconidia-like gray-white fungal flask-shaped pigmentation lactophenol elliptical verrucosum transverse dysjunctor saprobic muriform rhizopus cottony pseudallescheria floccosum alternaria
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1034016h


1034028h


2892048d


1034024h