pathology Flashcards
what is oesophageal reflux?
reflex of gastric acid into oesophageas
hiatus hernia?
part of stomach moves into thorax
why does oesophageal ulcer form from reflux?
acid tears away tissue lining and this ulcer can form and bleed!
stricture of the oesophagus leads to?
obstruction due to scar tissue
barrets oesophagus?
precancerous changes to oesophagus lining where it becomes more intestinal like
explain change of epithelium in barret’s oesophagus?
squamous epithelium to glandular epithelia
metaplasia?
transformation from one cell type to another
barrel’s oesophagus increases chances of what?
oesophageal cancer ADENOCARCINOMA
DYSPLASIA ?
abnormal development of cells lead to various conditions e.g. - cancer
ulceration if left unchecked leads to?
perforation - loss of continuity of wall - hole
3 types of gastritis?
autoimmune, bacterial, chemical
bacterial gastritis caused by?
helicobacter pylori
h.pylori in stomach lead to what?
peptic ulcers, gastritis, stomach cancer
bacterial gastritis and autoimmune gastritis does what to acid secretion
bacterial = increases acid secreted autoimmune= decreases acid secreted
chemical gastritis due to ?
NSAIDS
ALCOHOL
bile reflux from small I
PEPTIC ULCERS?
open sores on inner lining of stomach, duodenum, lower oesophagus - anywhere gastric acid can come in contact
adenocarcinoma?
in mucus glandular cells
transcoelomic spread?
spread of cancer within peritoneal cavity
hepatomegaly? suggests?
enlarged liver - suggest metastases
ascites?
accumulation of fluid in peritoneal cavity
liver failure is what?
inability of liver to perform function
complication of acute and chronic liver injury = final stage of many liver diseases
alcohol affect on liver explain and describe
fatty change - accumulation
hepatitis inflammation
liver cell death
liver failure and cirrhosis
viral hepatitis types
A, B,C,E
cirrohosis?
late stage scarring fibrosis of liver
what is jaundice?
increased circulating bilirubin
cholestasis ?
decrease in bile flow so accumulation of bile
portal hypertension?
increased pressure inside portal vein in liver due to lack of flow(blockage)
primary sclerosis cholangitis associated with what condition?
IBD
complication of cirrhosis of liver? 3
altered liver function
hepatoceullar carcinoma
portal hypertension
portal hypertension leads to?
splenomegaly and oesophageal varies that can bleed
what is cholangiocarcinoma?
bile duct cancer
cholelithiasis?
gallstones
what are gallstones?
small stones made up of cholesterol that form in GB
CHOLECYSTITIS?
inflammation of gall bladder
causes of common bile duct obstruction?4
gallstones
bile duct tumour
stricture (fibrosis)
external compression
common Bile duct obstruction lead to what?
jaundice
IBD includes?
ulcerative colitis and chrons disease
what gene mutation in association with CD?
NOD2
what is pathology of IBD?
exaggerated immune response
what is ulcerative colitis?
colon inflamed and has ulcers in the tract which can bleed and produce pus
pseudopolyps?
projecting masses of scar tissue that develop from tissue during healing phase in repeated cycle of ulceration
pancolitis?
UC over entire large intestine
fistula?
abnormal connection between areas
ischaemic enteritis?
arterial blood flow to small I is restricted which leads to infarction
what is radiation colitis?
injury inflammation to colon due to radiation -
dysplasia is either?
high or low grade
what is dysplasia?
abnormal development of cells in tissue/organs
an adenoma? presents as?
benign tumour of glandular cells in epithelium - as polyps
high grade dysplasia is ?
precursor to cancer
most common type of colorectal cancer?
adenocarcinoma
colorectal adenocarcinoma types/names?
right-sided(ascending) = exophytic/polypoid left-sided(descending/tranverse) = annular
angle of his?
angle between stomach and oesophagus
pain when swallowing called?
odynophagia
dysphasia?
difficulty swallowing
achalasia?
condition where LOS doesn’t relax properly and muscles in oesophageal wall are weak - PARALYSED
pH metro into oesophagus meaning?
pH probe into oesophagus - measure acid levels in stomach - diary and record changes in pH over time
manometry into oesophagus does what?
describes pressure waves in oesophagus and give food to swallow and see pressure changes monitored
achalasia caused by?
nerves in oesophagus damaged - myenteric plexus damaged -
what happens with food in achalasia?
collects up in oesophagus bc LOS won’t open
fundoplication?
full/partial wrap of stomach around bottom of oesophagus
examples of 2 PPIs?
omeprazole and lansoprazole
what carcinoma is barrets more associated with?
adenocarcinoma
eosinophilic oesophagitis? caused by?
chronic allergen mediated inflammation of oesophagus caused by build up of WBC in lining of oesophagus.
dyspepsia?
bad digestion - group of symptoms
vomiting, nausea, upper abdomen pain, heartburn,
red flag symptoms for endoscopy ?
anorexia loss of weight anaemia recent onset >55 yrs melaena/haematemisis - gi bleeding swallowing difficulty ALARMS
what is helicobacter pylori?
gram negative bacteria, spiral shaped that form ulcers in stomach and inflammation
where does helicobacter pylori reside?
surface mucous layer DOES NOT PENETRATE LAYERS
outcomes of HP infection?
asymptomatic
gastritis
ulcer
cancer
outcomes of HP infection depend on?
site host factors (smoker, genes) characteristics of bacteria
what antibody present if HP infection?
IgG
tests to investigate for HP infection?
UREA breath test stool antigen test CLO urease test biopsy endoscopy
NSAIDS such as?
ibuprofen, aspirin, steroids,
ranitidine?
H2 receptor antagonist - reduce acid in stomach
haematemesis?
vomit blood
treatment to eradicate HP?
triple therapy
clarithromycin
amoxicillin
PPI
gastric outlet obstruction?
due to?
inflamed, scarred stomach ulcer obstructs passage of food
obstruction due to-
inflammation
scar tissue
2 types of gallstones
each caused by what?
cholesterol stones - increase in cholestrol
pigment stones - increase in bile
or mixed
blockage of pancreatic duct leads to?
pancreatitis
obstructive jaundice painful due to?
gallstones in common BD
lithotripsy?
fragment gallstones
biliary atresia?
congenital -
infants where bile ducts outside and inside are scarred and blocked
choledochal cysts?
congenital - bile duct swells and bile backs up into liver
what tumours cause jaundice?
bile duct cancers
gallbladder cancer
pancreas head cancer
cholaniocarcinoma types?
bile duct cancer
mass forming - mass in duct
periductal - around duct
intraductal - within duct
ERCP?
and what done with it?
ENDOscopic procedure to look at small tubes in body - bile ducts
endoscopic with a biopsy or removal of stones
gall bladder cancer due to?
gallstones, polyps, diabetes, inflammation
ampullary carcinoma?
cancer tumour found in small opening where pancreatic duct and bile duct connect
type of ampullary carcinoma?
adenocarcinoma
functions of liver?
synthetic function - processing nutrients
detoxification - detoxify drugs -
immune function - combats infection -
storage -
liver function tests?
ALT AST ALP bilirubin gamma GT albumin prothrombin time
ALT and AST tests?
aminotrasnferases enzymes of liver
AST/ALT ratio - increased means damaged hepatocytes
ALP test?
alkaline phosphatase enzyme found highly in liver -
elevated if obstruction
gamma gt test?
liver enzyme that if elevated - sign of liver damage
albumin test?
test for functioning of liver
prothrombin time?
protein made by liver - clotting factor
tests liver function
MRCP?
imaging of liver, GB, ducts - scanner
cirrhosis of liver leads to what issue?
portal hypertension
analyse ascitic fluid for what?
cell count
protein
albumin
SAAG
SAAG for ascites is what?
ascites albumin gradient
tells us if ascites due to portal hypertension or not
more than 1.1 = portal hypertension present
less than 1.1 = non- portal hypertension causes (malignancy, infection)
hepatorenal syndrome?
worsening of ascites
oesophageal varices due to ? explain
enlarged/swollen veins that can bleed and lead to vomit blood
varies bleed due to increase portal hypertension that pushes blood elsewhere to areas that handle increase vol. (porto-systemic areas)
TIPS procedure explain?
connect two veins in liver to decrease pressure and create shunt
hepatic encephalopathy?
confusion due to increase in toxins in blood complication due to liver disease
tumour marker for hepatocellular carcinoma?
AFP protein
what chemical increases causing hepatic encephalopathy?
ammonia released into brain lead to confusion
causes of hepatic encephalopathy? 3/4
infection
drugs
alcohol
GI BLEED
Spontaneous bacterial peritonitis?
bacterial infection in peritoneum with no obvious source of infection - increase in ascitic fluid in abdomen
what is KEY treatment in alcohol hepatitis patients?
thiamine NUTRITIONAL SUPPORT - AS MOST ARE MALNOURISHED
What is non-alcoholic fatty liver? and causes?
build up of fat in liver due to
obesity
diabetes
difference in labs results between non-alcoholic FD AND alcoholic FD? (AAT/ALT)
non-alcoholic FD = ALT more than AAT
alcoholic FD = AAT more than ALT
viral hepatitis types either?
A,E = self limiting B,C,D = chronic disease
hepatitis D significant feature?
only affected with it if affected by hep B
Fibroscan of liver says what?
how scarred is the liver??
no fibrosis or cirrhosis present
contraindications of transplant? 6
active malignancy - spread elsewhere psychosocial factors brain death uncontrolled infection present vessels involved in tumour anatomical barriers
what is chronic pancreatitis?
pancreas permanently damaged from inflammation - loss of function
pseudocysts?
fluid filled growths that form in/out pancreas - can block ducts/vessels etc
what can cysts develop to?
cancer
EUS allows for?
images
biopsy
fluid aspiration if need be
pancreatic cancer causes what?
painless obstructive jaundice
serum amylase in pancreatitis?
elevated highly
gallstones in pancreatic duct does what?
raises the pancreatic duct pressure
celiac plexus block?
destroy nerves to relief pain in pancreatitis
MD-IPMN?
MAIN DUCT CYST pancreas
MCN?
MUCINOUS CYST in pancreas
what to do if cyst in duct? and why?
monitor the cyst and look fro worrisome features like enlarged - cyst wall - nodules -
as risk of malignancy
causes of upper GI bleeding?
ulcers and inflammation
risk of anticoagulants?
bleeding excessively
e.g. - anticoagulant?
warfarin
hepatitis c due to?
contact with blood and use of injecting and needles
mallory-weirs tear?
tearing at oesophageal-gastric junction - cause upper GI BLEED
angiodyplasia?
vascular malformation - leading to upper GI BLEED
What usual cause of lower GI bleed FRESH red blood?
haemorrhoids - if fresh red blood
what are haemorrhoids?
vascular cushion around anus
diverticular disease? lead to?
pouches form on inner lining of lower tract - lead to lower GI bleed
Meckel’s diverticulum?
bulge in lower small I - can get inflamed - lead to lower GI bleeding
management of GI bleed FIRST THING?
IV FLUID
MANAGEMENT OF GI BLEED?
- resuscitation
- risk classification - see if need critical care
- investigations/treatment
how to calculate risk in gi bleed?
measure blood urea, hb, HR, BP, PULSE,
age, drugs using, other conditions?
what medications not good for gi bleeds?
antiplatlets/anti-coags
liver cirrhosis leads to what?
portal hypertension
enlarged spleen and oesophageal. varices
treatment for varices?
oeso. band ligation - band over varices to shrink it down endoscopically
ab
vasoconstrictors
TIPS - shunt
peritonitis?
inflammation of peritoneum due to infection
functions of small I?
digestion, absorption, motility
what is constantly happening in the villi and crypt?
constant turnover
bacterial population in small I?
LOW bacterial population
capsule enterography?
capsule with lens/light and imager - swallowed to study inside of GI tract
Steatorrhoea?
high fat content in stool - smelly
coeliac disease?
autoimmune - when body attacks own healthy tissue - and damages gut in response - when eaten gluten
affect of coeliac disease?
damages lining of small I - prevents intake of nutrients
the mucosa of gut recognises what about bacteria?
detects and differenciates good bacteria from pathogens that require immune response
cytokines/chemikines?
mediators of immune response -
that are secreted by immune cells
peters patches? found where?
found ileum of gut -
masses of lymph tissue - nodules -
part of immune system
macrophages?
are phagocytotic
kill foreign microbes
first line of defence in gut
lamina propria function?
supports mucosal epithelium
provides immune defence
dysbiosis of microbiota meaning?
imbalance in bacterial colonic levels - leading to disease etc
crp in blood means?
inflammation marker in blood - from liver
faecal calprotectin?
biomarker substance released by body when inflammation in intestines - high levels associated with IBD
transmural inflammation in which IBD?
crowns disease not UC
pouch surgery?
after removal of intestine - allows for waste in body to be removed properly by pouch
surgical indications of crohns disease/IBD?
failure to manage with meds
relief of symptoms
management of fistulae
failure to thrive - weight loss/gain
FIT test?
faecal test to test for bowel disease - it detects blood in poo -
anal fissure?
tear in anus lining - pain and blood in poo
IBS? explain symptoms?
irritable bowel syndrome
bloating cramps constipation diarrhoea gas mucus in poo
classic feature of IBS?
relapses and remiits
symptoms comes and goes
calprotectin checking for?
inflammation in gut
laxatives for?
loosen stool and increase bowel movements
polyps in tract?
precancerous
but can be benign
two types of staging for cancer?
TNM
DUKES
dukes staging
A - confined to submucosa
B - C = invasion through muscular
D= presence of distant met
FAP condition?
Hereditary condition - which forms multiple polyps adenomas in intestine
screening for crc includes?
FIT testing
what symptoms of CRC?
IRON deficiency anaemia
altered bowel habits
bleeding
pain
stapled anoplexy?
procedure for haemorrhoids in anus
anus fissure bleeds how?
on wiping
treatments for anul fissures?
sphincterectomy
botox injection
faecal incontinence?
inability to control bowel movements - causing unwanted leaks
cobblestones on X-ray sign of?
crohns disease
colicky pain means?
comes and goes
rectal cancer what is done before surgery?
MRI
colostomy? ileostomy?
divert one end of the colon through opening in tummy - STOMA - allow contents/stool to divert its flow
ileostomy - small bowel done instead
large bowel obstruction benign causes?5
stricture volvulus - twisted faecal impaction intussusception - in on itself recent surgery injury
options/treatments for colorectal tumours ? 4
stoma (colostomy)
colectomy +anastomsis
stenting - keeps it open
palliation
hartmanns procedure?
resection of sigmoid rectal colon and end with colostomy
jaundice is when bilirubin is what level?
more than 3mg/dL
haemolytic jaundice? affect on stools and urine?
increase level of unconjugated bilirubin
no change in urine or stool
ALT and AST indicate what?
enzymes that indicate liver cell injury
ALP and GGT indicate what?
markers enzymes of biliary obstruction
affect of hepatocellular jaundice on stools and urine?
stools pale and urine is dark
alp/ast and alt levels in haemolytic jaundice?
normal
mrcp investigation?
non-invasive assessment of biliary tree - detect stones, tumours, etc
intussuspeption of bowel?
invagination of intestinal segment into a loop - obstruction the bowel
volvulus of gut?
twisted - lead to obstruction
adhesive small bowel obstruction means?
usually after operation - structures sticking together
what gene is most commonly associated with IBD?
NOD2
toxic megacolon due to?
severe UC - causes dilation of t/right colon
as stool frequency increases what it means for severity of UC?
WORSENING !
PATTERNS OF CD?
strictures scarring perforation fistulas abscesses ulcers
crypt abscesses seen where in UC or CD?
UC
COELIC DISEASE ASSOCIATE WITH WHAT? 3
other autoimmune diseases
- dermatitis heretiformis
- PBC
- insulin dependant diabetes mellitus
complications of coeliac disease?
cancer of small intestine - lymphoma/adenocarcinoma
cancer of pharynx and oesophagus
ceolic disease what is it?
chronic digestive disorder due to immune reaction to gluten protein
coelic disease - physiology?
inflammation of inner lining of small intestine and can lead to malabsorption of nutrients
skin rash formed from coeliac disease?
DH - dermatitis herpetiformis
causes of coeliac disease?
immune disorder - eats gluten it triggers the immune attack
functional GI DISORDERS? 4
disorders where no clear issue structurally or chemically
IBS
OESO. SPASM
non-ulcer dyspepsia
biliary dyskinesia
biliary dyskinesia ?
pain in GB
organic disease meaning?
there is an observable pathology
what electrolyte conditions are there in refeeding syndrome? 3
hypokalaemia
hypomagnesia
hypophosphatemia