Changes

Jump to navigation Jump to search

Skin Other - Pathology (view source)

Revision as of 18:23, 22 February 2011

1,067 bytes removed ,  18:23, 22 February 2011
no edit summary
Line 1: Line 1: −
{{review}}
+
[[Seborrhea]]
−
{{toplink
  −
|backcolour = FFCCCC
  −
|linkpage =Integumentary System - Pathology
  −
|linktext =Integumentary System
  −
|maplink = Integumentary System (Content Map) - Pathology
  −
|pagetype =Pathology
  −
}}
  −
<br>
     −
==Epidermal growth or differentiation disorders==
     −
===Seborrheic disease complex===
  −
*Abnormal cornification or function of sebaceous glands
  −
*Large amounts of free fatty acids and cholesterol
  −
*Decreased amounts of diester waxes in surface lipids
  −
*Bacterial population changes to pathogenic [[:Category:Staphylococcus species|coagulase positive staphylococci]]
  −
*Chronic disease affecting mainly dogs, sometimes cats and horses
  −
*Dry form - white to grey scales
  −
*Greasy form - scaly, excess brown to yellow lipids sticking to skin and hair
     −
===Primary idiopathic seborrhea===
  −
*Abnormal cornification
  −
*Epidermal turnover reduced to about 2/3 of normal
  −
*Microscopically:
  −
**Hyperkeratosis distending follicular ostia causing papillary appearance
  −
**Parakeratosis at edges of follicular ostia
  −
**Congested, oedematous dermal papillae
  −
**Spongiotic epidermis with leukocytes
  −
  −
===Secondary seborrhea===
  −
*Develops secondarily to many types of disease (''e.g.'' [[:Category:Integumentary System - Parasitic Infections|ectoparasites]], [[:Category:Integumentary System - Mycotic Infections|fungal infections]], [[Endocrine effects on the skin - Pathology|endocrine disease]], internal disease or allergy)
  −
*Microscopically:
  −
**Hyperkeratosis and/or parakeratosis of follicles and epidermis
  −
**Lesions relevant to the other disease
      
===Sebaceous adenitis===
 
===Sebaceous adenitis===
 +
*Epidermal growth or differentiation disorder
 
*Inflammation of sebaceous glands, alopecia, hyperkeratosis
 
*Inflammation of sebaceous glands, alopecia, hyperkeratosis
 
*Possibly immune-mediated
 
*Possibly immune-mediated
Line 44: Line 14:  
**Possibly orthokeratotic hyperkeratosis
 
**Possibly orthokeratotic hyperkeratosis
 
**Chronic lesions are deprived of sebaceous glands and contain mild inflammation and fibrosis at follicular isthmus
 
**Chronic lesions are deprived of sebaceous glands and contain mild inflammation and fibrosis at follicular isthmus
 +
 +
 +
[[Category:Integumentary System - Pathology]]
 +
    
==Pigmentation disorders==
 
==Pigmentation disorders==
Line 55: Line 29:  
*Examples of hereditary conditions: Maltese dilution of cats, Chediak-Higashi syndrome, leukoderma and leukotrichia of Dobermans, Arabian fading syndrome
 
*Examples of hereditary conditions: Maltese dilution of cats, Chediak-Higashi syndrome, leukoderma and leukotrichia of Dobermans, Arabian fading syndrome
 
*Asociated with some immune-mediated disorders, ''e.g.'' [[Discoid Lupus Erythematosus|discoid lupus erythematosus]]
 
*Asociated with some immune-mediated disorders, ''e.g.'' [[Discoid Lupus Erythematosus|discoid lupus erythematosus]]
 +
 +
 +
[[Category:Integumentary System - Pathology]]
 +
    
===Hyperpigmentation===
 
===Hyperpigmentation===
Line 60: Line 38:  
*Results from irritation or inflammation, pigmented neoplasms or [[Endocrine effects on the skin - Pathology|metabolic diseases]]
 
*Results from irritation or inflammation, pigmented neoplasms or [[Endocrine effects on the skin - Pathology|metabolic diseases]]
 
*Lentigo - circumscribed macular or slightly raised plaque with epidermal hyperplasia and hyperpigmentation
 
*Lentigo - circumscribed macular or slightly raised plaque with epidermal hyperplasia and hyperpigmentation
 +
 +
 +
[[Category:Integumentary System - Pathology]]
 +
    
==Eosinophilic infiltration==
 
==Eosinophilic infiltration==
Line 68: Line 50:  
*Grossly:raised plaques, erythematous, pruritic, erosed or ulcerated
 
*Grossly:raised plaques, erythematous, pruritic, erosed or ulcerated
 
*Microscopically: acanthosis, spongiosis, erosions or ulceration, predominantly eosinophilic dermatitis, possibly areas of collagen degeneration
 
*Microscopically: acanthosis, spongiosis, erosions or ulceration, predominantly eosinophilic dermatitis, possibly areas of collagen degeneration
 +
 +
 +
[[Category:Integumentary System - Pathology]]
 +
 +
 
===Eosinophilic granulomas===
 
===Eosinophilic granulomas===
 
*Involves cats, dogs, horses
 
*Involves cats, dogs, horses
Line 78: Line 65:  
**Nodular dermatitis or stomatitis
 
**Nodular dermatitis or stomatitis
 
**Fragments of degenerated collagen surrounded by eosinophils and macrophages
 
**Fragments of degenerated collagen surrounded by eosinophils and macrophages
 +
 +
[[Category:Integumentary System - Pathology]]
 +
 +
    
===Eosinophilic folliculitis and furunculosis===
 
===Eosinophilic folliculitis and furunculosis===
Line 83: Line 74:  
*Possibly due to arthropod bites
 
*Possibly due to arthropod bites
 
*May be multifocal in horses
 
*May be multifocal in horses
 +
 +
 +
[[Category:Integumentary System - Pathology]]
    
==Sterile granulomatous disorders==
 
==Sterile granulomatous disorders==
Line 91: Line 85:  
*Grossly: pustular and nodular dermatitis with oedema involving the face, ears, mucocutaneous junctions
 
*Grossly: pustular and nodular dermatitis with oedema involving the face, ears, mucocutaneous junctions
 
*Microscopically: granulomatous or pyogranulomatous perifolliculitis, paniculitis and dermatitis
 
*Microscopically: granulomatous or pyogranulomatous perifolliculitis, paniculitis and dermatitis
 +
 +
 +
[[Category:Integumentary System - Pathology]]
    
===Equine generalised granulomatous disease===
 
===Equine generalised granulomatous disease===
Line 99: Line 96:  
*Grossly: alopecia, scales, crusts, sometimes nodules and masses
 
*Grossly: alopecia, scales, crusts, sometimes nodules and masses
 
*Microscopically: multifocal granulomas, multinucleated giant cells
 
*Microscopically: multifocal granulomas, multinucleated giant cells
 +
 +
 +
[[Category:Integumentary System - Pathology]]
Bara
Author, Donkey, Bureaucrats, Administrators
53,803

edits

Retrieved from "https://en.wikivet.net/Special:MobileDiff/108980"

Navigation menu