Gastroenterology & GI Surgery Flashcards
(147 cards)
Autosomal dominant
- Familial adenomatous polyposis
- Peutz Jeghers syndrome
Gilbert’s syndrome
Autosomal recessive
Liver damage enzymes
- ALT
- ALP
- AST
Liver function enzymes
- Bilirubin
- Albumin
Category 1 Colorectal cancer risk
Low risk
1 1st degree relative > 60 years at dx
Category 1 Colorectal cancer screening
- iFOBT every 2 years after 45 years to 74
- low-dose (100 mg) aspirin daily should be considered from age 45 to 70
Category 2 Colorectal cancer risk
Moderate risk
One 1st degree relative < 60 years at dx
OR
One 1st degree relative + > 1 2nd degree diagnosed at any range
OR
Two 1st degree relatives diagnosed at any age
Category 2 Colorectal cancer screening
- Colonoscopy every 5 years starting at 10 years younger than the earliest age of diagnosis in 1st degree relative
OR age 50, whichever is earlier, to age 74.
- CT colonography if clinically indicated
- Low dose aspirin (100mg)
- Update history
Category 3 Colorectal cancer risk
High risk
Two 1st degree relatives + One 2nd degree relative diagnosed < 50
OR
Two 1st degree relatives + > Two 2nd degree relative diagnosed at ANY age
OR
> Three 1st degree relatives diagnosed at ANY age
Category 3 Colorectal cancer screening
- Colonoscopy every 5 years starting at 10 years younger than the earliest age of diagnosis of colorectal cancer in a first-degree relative
OR
age 40, whichever is earlier, to age 74. - CT colonography if clinically indicated
- Low dose aspirin (100mg)
- Update history
migratory superficial thrombophlebitis + deep vein
thrombosis
Trousseau’s syndrome
Trousseau’s syndrome, also known as Trousseau’s sign of malignancy, is a medical condition characterized by recurrent and migratory thrombophlebitis (inflammation of the veins due to blood clots) associated with an underlying malignancy, often an adenocarcinoma. It was first described by Dr. Armand Trousseau in the 19th century.
- Association with Cancer: Trousseau’s syndrome is most commonly associated with cancers of the pancreas, lung, stomach, and colon. It can also be seen in other malignancies.
- Symptoms: Patients often present with episodes of blood clots in superficial veins that appear and disappear spontaneously, along with more generalized symptoms such as pain, swelling, and redness in the affected areas.
- Mechanism: The exact mechanism is not fully understood, but it is believed that cancer cells can produce substances that activate the coagulation system, leading to an increased tendency for blood clots.
- Diagnosis: Diagnosis involves a combination of clinical history, physical examination, imaging studies, and laboratory tests. Identifying the underlying malignancy is crucial.
- Treatment: Management includes treating the underlying cancer and using anticoagulants to prevent and treat blood clots. Low molecular weight heparin (LMWH) is often preferred.
Trousseau’s syndrome highlights the complex interplay between cancer and coagulation, necessitating a multidisciplinary approach for optimal management.
hix of gastric bypass + discomfort, including nausea, vomiting, cramps, and diarrhea
Dumping syndrome
Dumping syndrome management
- Diet modification (high fibre + protein)
- -Hydrogen breath test positive
- Barium fluoroscopy
- radionuclide scintigraphy
reoperation if diet fails
Trousseau’s syndrome associated tumours
1-Pancreas 24%
2-Lung 20%
3-Prostate 13%
4-Stomach12%
5-Acute leukaemia 9%
6-Colon 5%
Small bowel obstruction investigation
initial: Abdominal X-ray
Best: CT abdomen/gastograffin meal (dx & tx)
Elective non-cardiac surgery following PCI
Defer surgery for 6 weeks - 3 months
Elective surgery with history of drug eluding stents
Defer for 12 months
emergency surgery with history of rug eluding stents
Withhold clopidogrel for 5-7 days
- continue aspirin
most common cause of large bowel obstruction
Colon cancer
upper GIT endoscopy 🚩’s
▪ anaemia (new onset)
▪ dysphagia (difficulty swallowing)
▪ odynophagia (painful swallowing)
▪ haematemesis or melaena
▪ unexplained weight loss >10%
▪ vomiting older age >50 yrs
▪ chronic NSAID use
▪ severe frequent symptoms including hiccoughs, hoarseness
▪ family history of upper GIT or colorectal cancer
▪ short history of symptoms
▪ neurological symptoms and signs
Oropharyngeal dysphagia causes
Neuro-muscular disease:
* Stroke
* Parkinson’s disease
* Brain stem tumour
* Degenerative conditions: ALS
MS
* Myasthenia gravis
* Peripheral neuropathy
Obstructive lesion:
* Tumour
* Inflammatory masses: abscess
* Pharyngeal pouch (Zenkers)
* Anterior mediastinal mass
Oesophageal dysphagia causes
Neuro-muscular disease:
* Achalasia
* Scleroderma
* GORD
Obstructive lesion:
* Tumour
* Strictures:
Peptic (reflux oesophagitis)
Radiation
Chemical (caustic Ingestion)
Medication
* Oesophageal webs (Plummer
Vinson)
* Foreign Bodies
Extrinsic Structural Lesions:
* Vascular compression (enlarged or Left Atrium)
* Mediastinal masses:
lymphadenopathy or retrosternal
thyroid.
Iron deficiency anaemia in elderly
colon cancer
high INR + low calcium + hypochromic microcytic anaemia
malabsorption syndrome
The combination of high INR, low calcium, and hypochromic microcytic anemia suggests a malabsorption syndrome due to the following reasons:
- High INR (International Normalized Ratio): This indicates a deficiency in vitamin K, which is essential for blood clotting. Vitamin K is absorbed in the small intestine, and malabsorption can lead to its deficiency, causing prolonged clotting times.
- Low Calcium: Calcium absorption primarily occurs in the small intestine. Malabsorption can result from conditions affecting the intestines, such as celiac disease, Crohn’s disease, or chronic pancreatitis, leading to hypocalcemia.
- Hypochromic Microcytic Anemia: This type of anemia is typically due to iron deficiency. Iron is absorbed in the duodenum and proximal jejunum. Malabsorption syndromes can impair iron absorption, resulting in this form of anemia.
These findings collectively suggest that the patient may have an underlying condition affecting the intestines’ ability to absorb essential nutrients, leading to deficiencies in vitamin K, calcium, and iron. Conditions like celiac disease, Crohn’s disease, or chronic pancreatitis should be considered and investigated.