Difference between revisions of "Skin Other - Pathology"

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==Eosinophilic infiltration==
 
==Eosinophilic infiltration==
===Eosinophilic plaques===
+
===[[Eosinophilic Plaques]]===
*Common in cats
 
*Medial thighs and abdomen mostly involved
 
*Often associated with hypersensitivity
 
*Grossly:raised plaques, erythematous, pruritic, erosed or ulcerated
 
*Microscopically: acanthosis, spongiosis, erosions or ulceration, predominantly eosinophilic dermatitis, possibly areas of collagen degeneration
 
  
 
[[Category:Integumentary System - Pathology]]
 
  
  

Revision as of 18:27, 22 February 2011

Seborrhea



Sebaceous Adenitis

Pigmentation disorders

Hypopigmentation

Hyperpigmentation

Eosinophilic infiltration

Eosinophilic Plaques

Eosinophilic granulomas

  • Involves cats, dogs, horses
  • Collagen degeneration in lesions os eosinophil degranulation
  • Often involved in reaction to parasites, foreigh bodies or mas cell tumours
  • Grossly:
    • Papules, nodules, plaques, ulcers in skin
    • Nodules or ulcers in oral mucosa of cats and dogs or on foot pads of cats
  • Microscopically:
    • Nodular dermatitis or stomatitis
    • Fragments of degenerated collagen surrounded by eosinophils and macrophages


Eosinophilic folliculitis and furunculosis

  • Rare in cats, dogs, cattle and horses
  • Possibly due to arthropod bites
  • May be multifocal in horses

Sterile granulomatous disorders

Juvenile pyoderma

  • Also known as Juvenile sterile granulomatous dermatitis and lymphadenitis, juveline cellulitis, puppy strangles
  • Involves dogs of less then 4 months of age
  • Grossly: pustular and nodular dermatitis with oedema involving the face, ears, mucocutaneous junctions
  • Microscopically: granulomatous or pyogranulomatous perifolliculitis, paniculitis and dermatitis

Equine generalised granulomatous disease

  • Also known as Sarcoidosis
  • In horses
  • Rare
  • Involves cutaneous lesions and systemic disease causing anorexia and weight loss
  • Grossly: alopecia, scales, crusts, sometimes nodules and masses
  • Microscopically: multifocal granulomas, multinucleated giant cells