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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