Nodules and Discharging Sinuses Flashcards
Define nodule
A circumscribed, solid elevation >1 cm in diameter
that usually extends into the deeper layers of the skin
including the dermis, the panniculus and sometimes
the muscle
Define tumour
A large mass that may involve any part of the skin or
subcutaneous tissues
Define cyst
An epithelium lined cavity containing fluid or a solid
material - in the skin they contain cornified cellular
debris, or glandular secretions
Define discharging sinus
The intense inflammatory response to infectious
agents/foreign material may lead to the formation of
a tract between the epidermis surface and deeper
tissues - can also be seen with cat bite abscesses
Define papule
A small solid elevation of the skin <1 cm in diameter,
involving a cellular infiltrate into the epidermis and
dermis
Define plaque
A series of coalescing or expanding papules with a
flat top
How would feline tuberculosis present?
Nodular, ulcerated lesions and regional lymphadenopathy.
Which three mycobacterial species cause feline leprosy?
M. lepaemurium, M. tarwinense and M. lepraefelis
Name a species that would mount and opportunist mycobacterial infection, resulting in nodules and discharging sinuses.
M. smegmatis
What does SGPS stand for?
Sterile granuloma and pyogranuloma syndrome
List four medications that could help with the mangement of SGPS
Prednisolone
Tetracycline and nicotinamide
Azathioprine
Ciclosporin
How would cutaneous T-cell lymphoma present?
Generalized erythematous exfoliative dermatitis (erythroderma) +/- pruritus
Plaques and nodules
Loss of pigment
What are the treatment options for cutaenous T-cell lymphoma?
High dose prednisolone
Retinoids
Chemotherapy
