DESCRIBING PATHOLOGICAL FINDINGS

A morphologic diagnosis includes the following:Severity, time, distribution, anatomic site and lesion

Example - Severe acute multifocal renal infarct

SeverityMild Moderate Severe

Time

PeracuteSudden death with APP

AcutePig with Erysipelas

ChronicRectal stricture

Distribution

BilateralRenal hyoplasia

DiffuseGreasy Pig Disease

FocalMelanoma of the skin

MultifocalPDNS

PatchyMange along the dorsum

UnilateralFlank biting

Anatomic site –which organ is affected

Lesion description –pathological description

Lesion can then be characterised using the following descriptive termsColour - describe what you see –do not use food analogies

1 2 3 4

Variety of urine colours –left to right1. Normal 12. Normal 23. Cystitis4. Pyelonephritis

Size –be accurate –use a rulerShape

Botryoid –shaped like grapesEndocardiosis

Circular –flatRingworm

IrregularPityriasis rosea

OblongTearing of the ureterovesical junction

OvoidCongenital swine pox lesions

Polypoid –polyp likeSkin tumor

Reniform –shaped like a kidney SpheroidCystic ovaries

Wedge-shapedPyelonephritis

Surface changes

BulgingLymphosarcoma in the rib cage

CobblestonedStomach with bowel oedema

CorrugatedIn ileitis

CrustedNecrotic ileitis

Eroded –skin onlyCarpal erosions in piglet

GranularBorrelia granuloma

PittedSurface in an end-stage kidney

RoughChronic mastitis in a sow

SmoothLeiomyoma of the uterus

StriatedMulberry Heart Disease

UlceratedGastric ulceration

UmbilicatedOesophageal stricture

VerrucousNasal tumour

Margins of the lesion

IndistinctSalmonella choleraesuis in thelung

InfiltrativeThymic tumour

PapillaryScrotal papillomatosis

PedunculatedChronic mastitis

Serpinginous –wavyPurulent dermatitis

SerratedEmbryonic folding - kidney

Sessile –broad base attachmentSkin tumour

Villous –finger likePericarditis

Well-demarcatedMycoplasma pneumonia

Consistency –be precise

HardSkull of peccary –note teeth

FirmNormal feacal pellet

SoftColitis feaces

CaseousStreptococci abscess

FluidFluid filled abscess

FriableClostridial hepatopathy

GrittyUrinary calculi

LeatheryChronic mange

ResilientThe normal nose

RubberyPRRSv in lungs

SpongyUdder oedema

ViscousShoulder abscess