SUBCUTANEOUS (MISTERMS) Flashcards
What is the MOT of SubFungi?
Trauma
What are the 4 kinds of infections?
• Mycetoma
• Sporotrichosis
• Chromoblastomycosis
• Phaeohyphomycosis
Phaeohyphomycosis is caused by?
Dematiaceous fungi
What is the appearance of the lesion of S. phaeohyphomycosis?
Cystic and overlying verrucose
This infection is under mycetoma wherein this involves the skin, subcutaneous tissues and may even invade the bones and joints.
Chronic granulomatous infection
These type of tumor has discharging sinuses filled with organisms, pus and fluid
Swollen tumor-like
If mycetoma is caused by fungi, it is?
Eumycetoma
If mycetoma is caused by actinomycetes, it is?
Actinomycetoma
Where is mycetoma usually found?
Soil, manure and rotting root
Mycetoma is characterized to be Watery can foot known as?
Madura foot
What causes Sporotrichosis?
Sporothrix schenckii
Primary lesions develop at the site
of implantation
Fixed cutaneous sporotrichosis
Commonly found in the limbs,
hands, and fingers
Fixed cutaneous sporotrichosis
FIXED CUTANEOUS SPOROTRICHOSIS discharges a fluid that is?
Purulent
Chronic infection that infects the
cutaneous and subcutaneous
tissues
FIXED CUTANEOUS SPOROTRICHOSIS
Involves the lymphatic system, Secondary lesions also appear
along the lymphangitic channels.
LYMPHOCUTANEOUS SPOROTRICHOSIS
No systemic symptoms are
present
LYMPHOCUTANEOUS SPOROTRICHOSIS
Involves the lungs
PULMONARY SPOROTRICHOSIS
Principal root of metastasis formation
Haematogenous dissemination
This is the expectoration of blood.
Haemoptysis
Pulmonary sporotrichosis involves the lungs therefore this lesion is the gradual progression to death.
Lung lesion
Involves the bones
Osteoarticular sporotrichosis
What is the symptom of osteoarticular sporotrichosis?
Stiffness and pain in the large joints
Lesions usually confined to the long bones near affected
joints
OSTEOARTICULAR SPOROTRICHOSIS
seldom occurs without arthritis
Osteomyelitis
What is the appearance of the nodules of Chromoblastomycosis?
Verrucoid crusted nodules
- Wart like appearance
This subcutaneous fungi, if left untreated it will elevate to resemble cauliflower.
Chromoblastomycosis
What are the causative agents of Chromoblastomycosis
✓ Phialophora verrucosa
✓ Fonsecaea pedrosoi
✓ F. compacta
✓ Cladophialophora carrionii
• chains branch from a conidium
• tree-like appearance
CLADOSPORIUM
With vase-shaped phialide arising from a conidiophore
PHIALOPHORA
• Arranged sympodially on short denticles
• Resembles a body builder
• With primary, secondary and tertiary conidia
RHINOCLADIELLA
• Disease: Chromoblastomycosis
• Microscopic morphology:
Hyphae: dark septate
Conidia: Cladosporium type (tree-like)
Cladosporium carrionii
• Disease: Phaeohyphomycosis, Mycetoma
• Microscopic morphology:
Hyphae: septate branched
with bends and tortuous
end
Conidia: Annelloconidia
✓ Attached to an annellide then to an
annellophore
✓ With vermiform granules (black pepper) on
direct examination
Exophiala jeanselmei
What is the type of conidia of exophiala jenselmei?
Annelloconidia
✓ Attached to an annellide then to an
annellophore
✓ With vermiform granules (black pepper) on
direct examination
Annelloconidia
• Disease: Chromoblastomycosis, Phaeohyphomycosis
• Microscopic morphology:
Hyphae: dark brown septate
Conidia: all three types
Fonsecaea pedrosoi
Fonsecaea pedrosoi may have secondary infection it may cause?
Elephantiasis
enlargement of the lower
extremities
Elephantiasis
• Disease: chromoblastomycosis, phaehyphomycosis
• Microscopic morphology:
Hyphae: dark septate
hyphae
Conidia: Phialopora
✓ with distinct
swollen center and collarette
Phialophora verrucosa
What is the type of conidia of Phialophora verrucosa?
Phialophora
with distinct
swollen center and collarette
Phialophora
• Fast grower
• Perfect fungus (Teleomorph and anamorph)
Pseudallescheria boydii
• Disease: Eumycotic mycetoma
with white or lightcolored granules on drainage
• Microscopic appearance:
Hyphae: hyaline septate and loosely arranged
Conidia: lollipop-shaped or lemon-shaped
annelloconidia on annellides
Pseudallescheria boydii
What is the type of conidia of Pseudallescheria boydii?
Lollipop-shaped or lemon-shaped
What is the other name of Sporothrix schenckii?
Rose Gardener’s Disease
Sporothrix schenckii is called “Rose Gardener’s Disease” due to?
contact with
sphagnum moss
• Disease: Sporotrichosis
• Microscopic appearance:
Hyphae: rope-like hyaline septate
Conidia: conidiophores arise at right angles
✓ darkly pigmented
✓ hyaline
Sporothrix schenckii
denticulated
Sporothrix schenckii
arrangement of conidia of Sporothrix schenckii?
Rosette or daisy-like
• Disease: phaeohyphomycosis
• Microscopic appearance:
Hyphae: septate and
branched with tortuous
twists and turns
Conidia: phialophora type with ovoid and unicellular
conidia attached to flask shaped phialide and without
collarette
Wangiella dermatitidis
• Disease: Cerebral Phaeohyphomycosis
• Microscopic appearance:
Hyphae: septate
Conidia: cladosporium type
with blastoconidia (body)
Conidiophores: with
poor
posture
Xylohypha bantiana
