1 -Salmonellosis.2 -Clostridial disease.

3 -Tuberculosis.4 -Strangles.

5 -Guttural pouch empyema.

6 -Purpura hemorrhagica.7 -Glanders.8 -Botulism.

9 -Tetanus.10 -Rodococcus equi. 11 -Actinobacillus equuli.

12 -Anthrax.13 -Ulcerative

lymphangitis.14 -Staph dermatitis.15 -Dermatophilosis.

16 -Chest abscess.17 -Necrobacillosis.

18 -Mastitis.

Profuse dark diarrhea over wall of stable. Diarrhea contained blood and

shreds of intestinal mucosa. Profuse diarrhea, often with blood

and shreds of mucosa

Very limited area of distal jejunum and proximal ileum affected with hemorrhagic

inflammation

Extensive severe inflammation of jejunum which is not distended.

Proximal distension (portion held) and normal large colon

Well defined patches of compromised small intestinal wall (arrow)

Granulomatous lesion in wall of ileum

Bilateral purulent hemorrhagic nasal

discharge

Bilateral purulent nasal discharge (with blood)

Bilateral mucopurulent nasal discharge

Massive pharyngeal and submandibular

lymphadenopathy

Ruptured pharyngeal lymph

nodeBastered Strangles, pharyngeal

swelling, discharging abscesses, weight loss, abducted elbow

associated with dyspnea and ventral edema

Bastered Strangles, extensive pulmonary abscess with multiple compartments and thick fibrous reaction

Endoscopic view of pharynx difference in discharge from guttural pouches indicating time difference to rupture of pharyngeal abscess in guttural pouches. Discharge from left pouch is older than right

Massive pharyngeal and submandibular lymphadenopathy

Bastered Strangles, hypopyon with minimal corneal involvement

Swelling ( non tympanic) below tendon of insertion of sternocephalicus m.

Endoscopic view, chondroids (inspissated and tumbled purulent material. Generalized diverticulitis with loss of detailed structure such as blood vessels on mucosa

Endoscopic view, caseated, purulent material on floor of medial compartment. Some loss of surface detail

Endoscopic view, very liquid contents, generalized diverticulitis with loss of normally obvious detalid anatomical features such as blood vessels and nerves

Endoscopic view, purulent discharge from pharyngeal ostium of left pouch (arrow). Marked dorsal pharyngeal compression.

Bilateral hemorrhagic nasal discharge

Bilateral venous epistaxis

Sharply demarcated edema of fore limb at level of elbow

(arrow) .

Petechial hemorrhages in vaginal m.m

Chains of ulcerated lymphatic nodules

Chains of ulcerated, discharging nodules following lymphatic

versals

Bilateral purulent hemorrhagic nasal discharge (scanty) with fetid odor

Tongue withdrawal absent

Tail (hand pump) head elevation. Horse showed stiff and stilted gait

Prolapsed third eye lid and enophthalmos in response to sudden noise and when face is tapped with a finger(

Fixed, alert facial expression, erect ears, prolapsed third eye lid, nostrils drawn open and tense mouth

Opisthotonus and extensor rigidity of neck, limbs, trunk and tail

Miliary abscesses on the lung

Large numbers of abscesses lesions in lung parenchyma

Foal presented with severe diarrhea. Large numbers of abscesses in mesentery and lymph nodes of colon and cecum

Neonatal septicemia, generalized petechiation of all body surfaces including

this pleural surface.

Five day old foal with sign of neonatal septicemia, aqueous

flare (due to inflammatory debris in aqueous humor ) , hyphema

(blood in anterior chamber). Muddy appearance of iris and

miosis

Multiple pyaemic abscesses encountered in a 10 day old foal with septicemia

Septicemic form, edematous swelling of neck and throat.

Chronic form, extensive

fibrosis and distal edema of

hind leg

Corded lymphatic vessels and

purulent discharge from ulcerated site

(arrow). Chronic thickening and

exudate over distal parts of limb

Lesion affecting the lower hind limbs of

foal above the hock. It is unusual to find

lesions above the hock or on the front limbs

Caused by Corynebacterium ovis

Lesion had been present with little

change for several years

Lesion restricted to saddle contact area. Very painful

lesion with exudates

Extensive hair loss followed minor grooming effort, leaving denuded skin with minimal scraping and no

apparent exudates

Loss of hair follows water run off pattern remaining hair is matted with exudate, some areas of hypopigmentation over

gluteal region

Extensive deep exudative dermatitis with cracking and thickening of skin on palmar pastern of white foot

Extensive hair loss leaving hyperkeratotic linear scabs and skin denuded of hair

Hair matted in a tesselated pattern

Hair plucked from a case showing paint brush effect

Paint brush effect with denudation of hair. No purulent exudate, skin

surface very dry

Pale glistening surface with purulent exudate found

under matted hair

Chest abscesses (pigeon breast / Wyoming strangles) Corynebacterium equi

Highly painful necrotic changes in skin of coronet

(arrow) .

Enlarged gland, mare lame, obvious engorgement of

transthoracic vein (arrow) Gland was hot, painful, and had stringy milk without

clots. Edema above gland

Enlarged gland with fibrous induration

Raised hair patches of very early lesions (10 days post

infection)

Obvious heavy encrustation with minimal exudation

Distribution of lesions corresponding with girth position. Several horses sharing saddlery developed an almost identical syndrome over 2 weeks. Lesion approximately 14 days post infection

Microsporum gypseum transmitted by insect bite, note: location and

pattern of lesions correspond with biting site of insect, hair loss not complete and scabs less easily

removed

Hair loss leaves silvery grey glistening skin

which heals within 4-5 days. Border of lesion

poorly demarcated

Multiple nodules and crusted plaques over the shoulder

Lesion on third eye lid and/ or at the lacrimal puncta often

have an aggressive neoplastic appearance

A mild, self limiting conjunctivitis with marked epiphora was present in this case

with the typically more severe lesions characteristic of the disease on the eye lids

and within the naso lacrimal apparatus. Marked tear dermatitis is often present

down the sides of the face.