Histopath Flashcards
betaHMC mutation
Hypertrophic Cardiomyopathy
Erythema marginatum
Subcutaenous nodules
Acute Rheumatic Fever
Acute Rheumatic Fever
Strep throat infection
Heart: pancarditis (endocarditis, myocarditis, pericarditis)
Joint: arthritis and synovitis
Skin: Erythema marginatum, subcutaneous nodules
CNS: encephalitis, Sydenham’s chorea
Jones Criteria
Diagnosis of Rheumatic Fever = group A strep infection + 2 major OR 1 major + 2 minor
Major (CASES) Carditis Arthritis Sydenham's chorea Erythema marginatum Subcutaneous nodules
Minor criteria Fever Raised ESR or CRP Migratory arthralgia Prolonged PR interval Previous rheumatic fever Malaise Tachycardia
Beady fibrous vegetations
verrucae
Rheumatic fever
Aschoff bodies
Small giant-cell granulomas
Rheumatic fever
Anitschkov myocytes
regenerating myocytes
Rheumatic fever
Libman-Sacks
Associated with SLE and anti-phospholipid syndrome
small (<2mm) “warty” vegetations
Sterile
Platelet rich
Acute infective endocarditis
Staph aureus
Strep pyogenes
Subacute infective endocarditis
Strep viridans
Staph. epidemris
Culture negative infective endocarditis
Coxiella Mycoplasma Candida Brucella Chlamydia Mycoplasma Bartonella
HACEK
Haemophilus, Aggregatibacter (previously Actinobacillus), Cardiobacterium, Eikenella, Kingella
Tricuspid infective endocarditis
IVDU
Staph aureus
Duke Criteria
Diagnosis of Infetcive Endocarditis
2 major
1 major = 3 minor
5 minor
Major:
Positive blood culture growing typical IE organism OR 2 positive culture >12 hours apart
Evidence of vegetation/abscess on echo OR new regurgitant murmur
Minor:
Risk factor (prosthetic valve, IVDU, congenital valve abnormalities)
Fever >38
Thromboembolic phenomena
Immune phenomena
Positive blood culture not meeting major criteria
Treatment of infective endocarditis
Acute:
Flucloxacillin for MSSA
Rifampicin AND Vancomycin AND Gentamicin for MRSA
Subacute:
Benzylpenicillin AND Gentammicin OR Vancomycin for 4 weeks
Mid-diastolic click and late systolic murmur
Mitral valve prolapse
Pericarditis
Types
Fibrinous: MI, Uraemia
Purulent: Staphylococcus aureus
Grenulomatous: TB
Haemorrhagic: Tumour, Tb, Uraemia
Fibrous = constrictive (arises from the above)
Pericardial effusion
Chronic heart failure
Pericardial effusion
Usual cause: Chronic heart failure
Cardiomyopathy
Dilated = systolic dysfunction
Hypertrophic = dialstoilic dysfunction
Restrictive = diastolic dysfunction
Charcot-Leyden crystals
Asthma
Curschmann spirals
Asthma
Goblet cell hyperplasia, hypertrophy of mucous glands
Chronic bronchitis
Yellow nail syndrome
Yellow dystrophic nails
Pleural effusions
Lymphoedema
Bronchiectasis
Young’s syndrome
Rhinosinusitis
Azoospermia
Bronchiectasis
Keratinisation
Intercellular prickles
Squamous cell carcinoma
M>F
Most common
Smoking
p53, c-myc mutations
EGFR mutation
mucin vacuoles
Adenocarcinoma
F>M
NON-Smokers
glandular differentiation with mucin production
EGFR –> give TKI (tyrosine kinase inhibitor)
RB1 mutation
Ectoptic ACTH
Lambert-Eaton
Small cell carcinoma
Arise from neuroendocrine cells
Smoking
P53 and RB1 mutations
Poor prognosis: mets early to bone, adrenal, liver brain
Ectopic ACTH
Cerebellar degeneration
Lambert Eaton: rare autoimmune disorder that is characterized by muscle weakness of the limbs. It is the result of an autoimmune reaction in which antibodies are formed against presynaptic voltage-gated calcium channels
Poorly differentiated malignant epithelium tumour of the lung
Large cell carcinoma
Poor prognosis
Large cells
Large nuclei
No evidence of glandular or squamous differentiation
Carcinoid syndrome
Flushing
Diarrhoea
Bronchoconstriction
Ectopic serotonin
Tx: Octreotide
ERCC1
Poor response to cisplatin
Linitis plastica and signet ring cell
Gastric adenocarcinoma
5-ASA
Ulcerative colitis
Watershed areas of gut
Splenic flexure (SMA transition to IMA)
Rectosigmoid (IMA transition to internal iliac)
Carcinoid crisis
Life-threatening vasodilation Hypotenion Tachycardia Bronchoconstriction Hyperglycaemia
Enterochromaffin cell origin
Serotonin producing
Lung, bowel, ovaries, testes
Carcinoid syndrome
Urinary 5-HIAA
Enterochromaffin cell cancer
Carcinoid syndrome
Hypoproteinaemic Hypokalaemic
Villous adenoma
Risk factor for adenoma –> adenocarcinoma
1) Size (main factor)
2) dysplasia
3) villous component
Juvenile polyposis
Autosomal dominant
In children
Haemartomatous polyp
100s
May require colectomy to stop haemorrhage
Peutz–Jeghers syndrome
Autosomal dominant -LKB1
Hamartomatous polyps
Hyperpigmented macules on the lips and oral mucosa (melanosis)
Increased risk of intussusception and malignancy
Hyperplastic polyp
Shedding of epithelium, cell build up
50-60 yrs
Pseudo polyp
IBD (UC)
Microsatellite instability
Hereditary non-polyposis colorectal cancer
HNPCC
Colorectal cancer
95% adenocarcinoma
Right-sided bowel tumours
Iron deficiency anaemia
Weight loss
Left-sided bowel tumours
Change in bowel habit
Crampy LLQ pain
CEA
colorectal cancer
Accumulation of fat droplets in hepatocytes
Hepatic steatosis (fatty liver)
Ballooning hepaotcytes
Necrosis
Mallory-denk bodies
Fibrosis
Pericellular fibrosis
Alcoholic hepatitis
Micronodular cirrhosis
Bands of fibrous tissue
Intra- and extra- hepatic shunting
Alcoholic cirrhosis
Neutrophil polymorphs
Mallory-denk
Alcoholic hepatitis
Megamitochondria
Alcoholic hepatitis
NAFLD
Steatosis in non-alcoholics
NASH
NAFLD + inflammation
Steatosis + inflammation in non-alcoholics
Interface hepatitis with plasma cells
Autoimmune hepatitis
Anti-LKM
Type II autoimmune hepatitis
Anti-SMA
Type I autoimmune hepatitis
Primary Biliary Cholangitis
Autoimmune inflammatory destruction of medium sized INTRAhepatic bile ducts
Slow development of cirrhosis over many years (hence renamed form cirrhosis to cholangitis as can diagnose prior to cirrhosis)
F> M 10:1
Increased serum ALP
Increase cholesterol
Increase IgM (late feature)
Anti-mitochondrial antibodies
NO BILE DUCT DILATATION
Bile duct loss with granulomas
Present with fatigue, pruritis, abdo discomfort
Tx: ursodeoxycholic acid
Primary Scleroisng Cholangitis
Inflammation and obliterative fibrosis of EXTRAhepatic and INTRAhepatic bile ducts
Multi-focal stricture formation with dilitation of preserved segments
Onion-skinning fibrosis
M > F
Associated with IBD (Ulcerative colitis)
Increase ALP
p-ANCA
Bile duct dilatation
ERCP: beading of bile duct (multifocal strictures)
Increase in cholangiocarcinoma
Absent aslpha globulin band on electrophoresis
A1AT deficiency
Haemorrhagic cystitis
Cyclophoshphamide use
Urinary schistosomiasis
Squamous cell carcinoma of bladder
Most common bladder tumour
Transitional cell (Urothelial) tumour
90% of bladder tumours
Smoker
Aromatic amines
Gleason system
Grading of Prostate cancer
Acute bacterial prostatitis
E.Coli
Most common germinal tumour
Seminoma
95% of testicular tumours are germ cell origin
AFP, HCG and LDH
tumour markers for teratoma
- male peeing on pregnancy test story
Nephrotic syndrome
Triad:
>3g/24 hr protein
Hypoalbuminaemia
Oedoema
(+hyperlipidaemia)
Diffuse glomerular basement membrane thickening
Membranous glomerular disease
= primary cause of nephrotic syndrome
Primary causes of nephrotic syndrome
Minimal change disease
Membranous glomerular disease
Focal segmental glomerulosclerosis
Focal and segmental glomerular consolidation and scarring
Focal segmental glomerulosclerosis
Membranous glomerular disease
Causes nephrotic syndrome
Common in adults
Diffuse glomerular basement membrane thickening
Loss of podocyte foot processes
Subepithelial spikey depsotis
Can be primary or secondary to SLE, drug, malignancy
Ig and complement in granular deposits along entire GBM
40% ESRF 2-20 yrs
Focal segmental glomerulosclerosis
Causes nephrotic syndrome
Common in adults
Focal and segmental glomerular consolidation and scarring
Hyalinosis
Loss of podocyte foot processes
Ig and complement deposited in scarred areas
50% respond to steroids
50% ESFR in 10 years
Primary
Can be due to HIV nephropathy and Obesity
Mesangial matrix nodule = Kimmelstiel Wilson Nodules
= Diabetes nephropathy
causes nephrotic syndrome
Apple green birefringence with Congo red stain
Amyloidosis
Can cause nephrotic syndrome
Chronic inflammation
TB
RA
Multiple myeloma - AL protein deposition
Nephritic syndrome
Manifestation of glomerular inflammation (glomerulonephritis)
Characterised:
Haematuria (coca-cola urine)
Dysmorphic RBCs and red cell casts in urine
May also have: Oliguria Increased urea and creatinine Hypertension Proteinuria (but sub nephrotic levels)
Causes of Nephritic Syndrome (5)
Acute post-infectious glomerulonephritis
IgA nephropathy (Berger Disease)
Rapidly progressive (Cresenteric) Glomerulonephritis (3 types)
Hereditary nephritis (Alport’s syndrome)
Thin basement membrane disease (benign familial haematuria)
HLA-DRB1
Goodpasture’s