Subcutaneous Mycoses Flashcards
Causative agents of:
Chromoblastomycosis
Chromomycosis
Dematiaceous fungi
(having melanin or melanin-like pigment in the wall of their hyphae and/or spores)
✅ Phialophora verrucosa
✅ Fonseccae pedrosoi
✅ Rhinocladiella aquaspersa
✅ Fonseccae compactum
✅ Cladophialophora carrionii
Mycetoma causative agents
🩵Pseuddallescheria boydii
🩵Acremonium falciforme
🩵Madurella mycetomatis
🩵M. Grisea
🩵Exophiala jeanselmi
Sporotrichosis causative agent
Sporothrix schenkii
Rhinosporidiosis causative agent
Rhinosporidium seeberi
Phaeohyphomycosis causative agents
🩵 Exophiala spp
🩵 E. dermatitidis
Lobomycosis causative agent
Lacazia loboi
Chronic, slowly progressive granulomatous infection of skin & subcutaneous tissues with the involvement of underlying fascia & bones commonly affecting the extremities.
MYCETOMA
AKA Maduramycosis or Madura foot.
MYCETOMA
Two (2) Classification of Mycetoma
̈ Based on the causative agent
̈ Based on the colour of grains
Colour of grains in Mycetoma of various etiology
White to yellow
Brown to black
Red
Brown to black mycetoma
Madurella mycetomatis
Madurella grisea
Exophiala jeanselmei
White to yellow grains Mycetoma
Pseudollescheria boydii
Acremonium falciforme
Red grains mycetoma
Actinomadura madurai
Common among field workers, famers - prone to thorn prick injury & trauma.
Mycetoma
NOTE:
🩵Entry of pathogen into the injured site, mostly foot.
🩵Formation of multiple sinuses on the surface discharging viscid, seropurulent fluid containing granules or grains which are microcolonies of the causative agent.
🐈
Mycetoma Triad
🩵Tumefaction - tumor like swelling
🩵Multiple draining sinuses
🩵Presence of grains or granules in sinuses.