Describing Pathological Findings

 

A morphologic diagnosis includes the following:

Severity, time, distribution, anatomic site and lesion

Example - Severe acute multifocal renal infarct

 

Severity

Mild

Moderate

Severe

Time

Peracute

Sudden death with APP

Acute

Pig with Erysipelas

Chronic

Rectal stricture

Distribution

Bilateral

Renal hyoplasia

Diffuse

Greasy Pig Disease

Focal

Melanoma of the skin

Multifocal

PDNS

Patchy

Mange along the dorsum

Unilateral

Flank biting

Anatomic site which organ is affected

Lesion description pathological description


Lesion can then be characterised using the following descriptive terms

Colour - describe what you see do not use food analogies

1 2 3 4

Variety of urine colours left to right

1. Normal 1

2. Normal 2

3. Cystitis

4. Pyelonephritis

Size be accurate use a ruler

Shape

Botryoid shaped like grapes

Endocardiosis

Circular flat

Ringworm

Irregular

Pityriasis rosea

Oblong

Tearing of the ureterovesical junction

Ovoid

Congenital swine pox lesions

Polypoid polyp like

Skin tumor

Reniform shaped like a kidney

Spheroid

Cystic ovaries

Wedge-shaped

Pyelonephritis


 

Surface changes

Bulging

Lymphosarcoma in the rib cage

Cobblestoned

Stomach with bowel oedema

Corrugated

In ileitis

Crusted

Necrotic ileitis

Eroded skin only

Carpal erosions in piglet

Granular

Borrelia granuloma

Pitted

Surface in an end-stage kidney

Rough

Chronic mastitis in a sow

Smooth

Leiomyoma of the uterus

Striated

Mulberry Heart Disease

Ulcerated

Gastric ulceration

Umbilicated

Oesophageal stricture

 

 

Verrucous

Nasal tumour

 

 

Margins of the lesion

Indistinct

Salmonella choleraesuis in the lung

Infiltrative

Thymic tumour

Papillary

Scrotal papillomatosis

Pedunculated

Chronic mastitis

Serpinginous wavy

Purulent dermatitis

Serrated

Embryonic folding - kidney

Sessile broad base attachment

Skin tumour

Villous finger like

Pericarditis

Well-demarcated

Mycoplasma pneumonia

Consistency be precise

Hard

Skull of peccary note teeth

Firm

Normal feacal pellet

Soft

Colitis feaces

Caseous

Streptococci abscess

Fluid

Fluid filled abscess

Friable

Clostridial hepatopathy

Gritty

Urinary calculi

Leathery

Chronic mange

Resilient

The normal nose

Rubbery

PRRSv in lungs

Spongy

Udder oedema

Viscous

Shoulder abscess