Block 32 Week 5 Flashcards
gastric cancer incidence?
- more common in men
- highest indicence in far east
- > 90% are adenocarcinomas
RF for gastric cancer?
- H. Pylori infection (secondary to inducing atrophic gastritis)
- Excessive intake of salted food
- Smoking
- Pernicious anaemia
- Menetrier’s disease
- Gastric polyps
gastric cancer symptoms?
- Usually presents late with symptoms of dyspepsia
- Weight loss, anorexia, nausea
- Upper GI bleed/anaemia
- Maybe outflow obstruction if tumour near pylorus
gastric cancer - palpable?
- Palpable epigastric mass
- Virchow’s node – palpable lymph node in supraclavicular fossa
Blood tests for gastric cancer?
- FBC - iron def anemia
- LFT - evidence of mets
CT for gastric cancer?
- staging
- mets
Endoscopy for gastric cancer?
- Visualisation for histology
BARRETS?
- Prescence of columnar epithelium in LO
- Results from long-standing acid reflux with metaplasia from squamous to columnar epithelium in the lower oesophagus
- Its a premalignant condition for oesophageal adenocarcinoma – 30 fold increase in risk
Decision to treat?
- the date a patient agrees a treatment plan, may not be the day consent is signed
- Can change if the treatment plan changes and the patient needs to agree the change
symptoms of GOJ cancer?
- Atypical upper abdominal pain.
- Dyspepsia
- Nausea and vomiting.
- Anorexia.
- Early satiety.
dysphagia in GOJ cancer?
- Progressive dysphagia initially solids (bread)
- The dysphagia may be accompanied by a steady, boring pain, which often signals mediastinal involvement & inoperability.
- Obstruction (occurs when cancer is far advance)
Signs of GOJ cancer?
- Anaemia.
- Weight loss
- Palpable mass (liver metastases)
- Virchow’s node
- Ascites
History for GOJ cancer?
- B’s O
- years of dysphagia
- h pylori
- prev gastric surgery
- known perinicious anemia
CRC tumour markers?
CEA
Prostate cancer tumour marker?
PSA
CA125 tumour marker?
ovarian
pancreatic cancer tumour marker?
CA19.9
hepatocellular cancer tumour marker?
AFP -germ cell, ovary/ testis
Which sites are more commonly affected by CRC?
caecum and ascending colon most affected
LNs CRC spreads to?
- spreads to local paracolic, para-aortic lymph nodes
gastric cancer risk factors?
- H. Pylori increases HR to 4.5.
- Smoked foods.
- Tobacco, alcohol.
- Pernicious anaemia, achlorhidria.
- Blood group A.
gender and age inc risk for gastric cancer?
- Male sex.
- Age 50- 70 yrs.
pres of gastric cancer - other?
- Anorexia.
- Early satiety.
- Nausea and vomiting.
diagnosis of gastric cancer?
- virchows node
- FBC: anaemia, plasma proteins: malnutrition.
- Endoscopy biopsy, CT scan chest and abdomen.
hernias are generally caused by?
increased intra-abd pressure, weak or damaged tissues or comb of both
causes of increased abd pressure - cough?
- Chronic cough:COPD, long-term smoking,bronchiectasis,cystic fibrosis
causes of inc abd pressure - abd distension?
pregnancy, ascites, peritoneal dialysis, obesity (ventral hernias)
causes of inc abd pressure - straining?
chronic constipation, prostatism, heavy lifting during work or exercise
* Kyphoscoliosis
weakened tissues leading to hernias?
- Congenital defects:patent processus vaginalis, patent umbilical ring
- Collagen disorders:Ehlers-Danlos syndrome, vitamin C deficiency, family history of hernias
- Trauma:including surgery
- Ageing
- Chronic malnutrition
- Long-term corticosteroid use
most common type of hernias?
inguinal hernias
inguinal hernia?
- abnormal protrusionofabdominopelvic contents through thesuperficial inguinal ring into the groin.
Inguinal canal contents?
- in men, the inguinal canal contains the spermatic cord to the testis and the round ligament in women
- carries the illioinguinal nerve and genital branch of the genitofemoral nerve in both
direct inguinal hernia?
- caused by a weakness in the posterior wall of the inguinal canal - Hesselbach’s triangle
- abd contents (usually just fatty tissue, sometimes bowel) are forced directly through this defect into the inguinal canal
direct hernia enters through the
deep ring and exits via superficial
indirect inguinal hernia?
- Instead of piercing the posterior wall, the abdominal contentsenter medial to the deep ring, pass along the length of the inguinal canal and exit via the superficial ring,
indirect inguinal hernia?
- Instead of piercing the posterior wall, the abdominal contentsenter medial to the deep ring, pass along the length of the inguinal canal and exit via the superficial ring,
indirect vs direct inguinal hernias?
- if you place your finger over the deep inguinal ring (just above the mid-point of the inguinal ligament), then you can control an indirect inguinal hernia which has been reduced.
- If when youpress the deep ring, thehernia still protrudes, then the hernia is emerging via a defect in the posterior wall medial to this point and is, therefore, adirect hernia.
IH RFs?
- IH are more common in men
- incidence peaks at 70
- low BMI RF for inguinal hernias
CFs of an inguinal hernia?
- Patients often present with alump in the grointhat comes and goes and has slowly increased in size over time.
- the lump may have popped out suddenly, for example after heavy lifting.
symptoms of an inguinal hernia?
- symptomatic hernias present w groin pain or discomfort, espec after coughing, bending over or standing for long periods
- pain/ altered sensation over scrotum or inner thigh due to compression of illioinguinal nerve
- changes in bowel habit or US depending on hernia contents
inguinal hernias are often?
asymptomatic other than the lump
diagnosis of an inguinal hernia?
- palpable swelling located above and medial to pubic tubercle
- Larger hernias may extend down into thescrotum.
diagnostic uncertainty w hernias?
- Where there is diagnostic uncertainty, anultrasound scanof the groin can help differentiate between other possible causes such as enlarged lymph nodes, fatty lumps, or vascular pathology.
femoral hernias?
- less common type of hernia
- freq present w bowel obstruction
what is a femoral hernia?
- abnormal protrusion of abdominopelvic contentsthrough the femoral canalinto the medial upper thigh.
- the femoral canal is a narrow space bordered by the lacunar ligament so they are at a high risk of obstruction or strangulation
who are femoral hernias more common in?
- more common in women
- incidence inc w age - higher risk over 50
- low BMI - less fat in femoral canal
protective factors with femoral hernias?
laparoscopic inguinal hernia repair
Cfs of a femoral hernia?
- lump in groin
- sig prop present as an emergency w symptoms of bowel obstruction or strangulation
- bowel can perforate
inguinal vs femoral hernias?
- inguinal hernias are situated above and medial to the pubic tubercle
- femoral hernias are located below and lateral to the pubic tubercle
- Femoral hernias are usually quite small and are not always easily palpable, especially in overweight patients.
management of femoral hernias?
- high risk of complications so always need to be repaired
- laparscopic mesh repair the best method
obturator hernia?
- very rare
- An obturator hernia is an abnormal protrusion of abdominopelvic contents through theobturator foramenof the bony pelvis into the medial upper thigh.
RF for an obturator hernia?
- ‘little old lady hernia’
- mostly affect elderly multiparous women
- more common in people who are v thin or have recently lost weight like femoral hernias
why does pregnancy increase risk of an obturator hernia?
- changes to pelvis and pelvic floor in pregnancy means herniation is easier
- sharp angles of female obturator foraman also mean structures herniate through it
how do obturator hernias present?
- more than 90% present as an emergency w an acute abdomen and features of bowel obstuction/ strangulation
- This usually occurs suddenly, but some patients may reportself-limiting episodes of subacute obstructionat home previously.
episodes of obstruction with obturator hernias?
- These are characterised by attacks of colicky abdominal pain, bloating and nausea/vomiting which resolved within a few hours.
lump w obturator hernias?
- deep position means there’s hardly ever a lump to feel
how can patients also present w obturator hernias?
- patients can also present w pain and altered sensation along the inner thighdue tocompression of the obturator nerveby the hernia,
- which is relieved by flexing the hip and worsened by internally rotating it - howship romberg sign
howship romberg sign?
- pain that is relieved by flexing the hip and made worse by internally rotating it
- obturator hernia
test for undifferentiated acute abdomen?
- gold standard: CT abdo pelvis with portal venous contrast
management of obturator hernias?
- generally require emergency surgery
umbilical hernia?
- most common ventral hernia
- An umbilical herniais an abnormal protrusion of intra-abdominal contents through a fascial defect in or around theumbilical ring.
RFs for umbilical hernias?
- women especially during or after pregnancy
- Down’s syndromeandBeckwith-Wiedemann syndromehave been associated with umbilical hernias in children.
- chronically raised intra-abd pressure due to obesity or ascites
20% of ? patients develop umbilical hernias?
- cirrhosis patients, secondary to ascites.
- Umbilical hernias can be lethal to these patients, as they often develop large hernias containing bowel and do not have the physiological reserve to survive an acute complication.
CFs of umbilical hernias?
- usually asymptomatic
- symptomatic patients usually have a lump in their belly button
- hernias containing bowel are at risk of obstruction or strangulation
umbilicus in umbilical hernias?
- palpable swelling in or around umbilicus
- The umbilicus itself may beeverted or distortedby the hernia. It is important to note the condition of theoverlying skin, which can become stretched and thin and may start to break down, posing a risk of infection.
management of umbilical hernias?
- low risk of complications and can safely be managed conservatively
- majority of symptomatic umbilical hernias should undergoopen repair with a meshto reduce the risk of recurrence.
complications of hernias?
obstruction and strangulation
obstruction from hernias signs?
- abd pain
- distension and vomiting may occur
- hernia will tense tender and irreducible
strangulation from hernias?
- become red and tender
- irreducible
- no impulse on cough
- if contains bowel -> signs of obstruction
causes of RIF pain?
- appendicitis
- meckles divertiuculm
- UTI
- PID
- Ectopic pregnancy
- mesenteric lymphadenitis
Appendicitis pain?
- acute appendicitis - pain origininally epigastric and then right lowe quadrant.
- accompanied by nausea, vomiting, loss of appetite and low grade fever
meckle’s diverticulum?
- meckles’s diverticulum - GI bleeding, intestinal obstruction (symptoms usually before age of 2)
PID?
- PID - bilateral lower abd and pelvic pain - dull
- fever, headache, lassitude
- abn vaginal discharge
- usually appear at the time and immediately after menstruation
mesenteric lympahdenitis?
peritonitis common causes?
- most commonly caused by perforation of an abd viscera e.g. colon, appendix, GB
primary peritonitis?
spontaneous bacterial invasion of the peritoneal cavity. Also known as spontaneous bacterial peritonitis. Seen in patients with pre-existing ascites (mainly chronic liver disease)
secondary peritonitis?
- Secondary: peritoneal infection due to loss of integrity of the gastrointestinal or urogenital tracts. This leads to contamination of the peritoneal space. This is the cause in perforation
tertiary peritonitis?
- Tertiary: recurrent or persistent infection of the peritoneal cavity that typically occurs after secondary peritonitis.
- Less well defined and usually seen in patients who are immunocompromised
localised peritonitis?
- Localised: this refers to a focus of infection that is usually walled-off or contained by adjacent organs
generalised peritonitis?
also known as diffuse, this refers to an infection that has spread throughout the entire cavity
what can lead to SP - oesophagus perf?
- Oesophagus: penetrating injury (trauma), rupture (Boerhaave syndrome), malignancy
what can lead to SP - stomach perf?
- Stomach: malignancy, peptic ulcers
Pancreas issue leading to secondary peritonitis?
pancreatitis
hepatobiliary issues leading to secondary peritonitis?
gallstones, cholecystitis, malignancy
small intestine issues leading to secondary peritonitis?
ischaemic bowel, strangulated hernias
large intestine issues leadong to secondary peritonitis?
diverticulitis, colorectal cancer
localised infection to generalized peritonitis?
A localised infection may develop because the infection becomes walled-off or is contained by the positioning of adjacent organs. In this situation, an abscess may develop in an attempt to control the spread of infection. If the infection spreads throughout the peritoneal cavity this leads to generalised peritonitis
cfs of peritonitis?
- cardinal feature: acute, severe abd pain
- Peritonitis should be suspected in any patient with sudden onset, severe abdominal pain.
accompanying features of peritonitis?
- Accompanying features are usually fever, nausea, vomiting, and systemic upset (e.g. tachycardia, hypotension). Patients may be extremely unwell with shock.
abd pain w peritonitis?
- Abdominal pain is often dull and poorly localised initially due to inflammation of the visceral peritoneum.
- As the parietal peritoneum becomes involved, pain becomes more severe, sharp, and localised
symptoms of peritonitis?
- Abdominal pain: may be localised or generalised
- Pain worse on movement: patients often described as wanting to stay rigid to prevent aggravating the inflammation
- Abdominal distension
signs of peritonitis?
- guarding
- tendernerness
- rigidity
guarding?
voluntary contraction of the abdominal muscles (to protect from the pain)
rigidity?
- Rigidity: involuntary muscle contraction due to underlying inflammation
- rebound tendernes
what else might you get with peritonitis?
- absent/ reduced bowel sounds
- inflammatory mass: may suggest abscess
- features of septic shock
features of septic shock?
- hypotension,
- oliguria/anuria,
- confusion,
- mottled skin
what must be excluded with peritonitis?
make sure you check the hernial orifices in a patient with suspected peritonitis to exclude a strangulated hernia.
perforated stomch causes
benign causes of bowel obstruction?
- volvulus
- stricture
- incarcerated hernia
- tuberculosis
- fecal impaction
malignant causes of bowel obstruction?
- CRC
- metastatic disease
causes of small bowel obstruction?
post op adhesions or hernia
causes of large bowel obstruction?
malignancy, diverticular disease, or volvulus
cardinal features of bowel obstruction?
- abd pain
- vomiting
- abd distension
- absolute constipation
abd pain in BO?
colicky or cramping in nature (secondary to the bowel peristalsis)
Vomiting in bowel obstruction?
occurring early in proximal obstruction and late in distal obstruction
absolute constipation in bowel obs?
- Absolute constipation– occurring early in distal obstruction and late in proximal obstruction
SBO features?
- early vomiting
- billous and watery, little to no odour
- pain is an early symptom, peri-umbilical
- abd distention may be absent
what is almost always present w SBO?
anorexia
LBO?
- small volumes, later vomiting
- foul odour vomiting
- localised, deep pain
- often described as crampy
- abd distention present