pathology

What is McBurney's point in relation to appendicitis?

McBurney's point is located 2/3 of the distance from the umbilical cord to the hip.

What does rebound tenderness indicate when pressing on McBurney's point?

Rebound tenderness indicates pain, suggesting appendicitis.

What is Rovsing's sign?

Rovsing's sign is when pushing on the left lower quadrant (LLQ) causes pain in the right lower quadrant (RLQ).

What is the purpose of the psoas test?

The psoas test assesses the hip flexor and can indicate irritation of the iliopsoas muscle associated with appendicitis.

What is mesenteric adenitis?

Mesenteric adenitis is the inflammation of lymph nodes in the mesentery.

What is cholecystitis?

Cholecystitis is the inflammation of the gallbladder.

What does 'triple A' refer to?

Triple A refers to an abdominal aortic aneurysm, which is an enlargement of the aorta in the abdomen.

What is Crohn's disease primarily characterized by?

Crohn's disease is primarily characterized by inflammation of the ileum, the third portion of the small intestine.

What type of information do symptoms and signs provide in a medical context?

Symptoms are subjective information reported by the patient, while signs are objective information that can be observed.

What does the OPQRST method address?

The OPQRST method is used to assess pain: Onset, Provocation, Quality, Radiation, Severity, and Time.

What is the purpose of barium sulfate in medical imaging?

Barium sulfate is used to visualize the intestinal tract during imaging studies.

How do X-rays differ from CT scans?

X-rays are single-direction beams through body tissues, while CT scans stack 2D X-ray images to create a 3D image.

What is the primary distinction between T1 and T2 MRI sequences?

T1 enhances fatty tissue as white, while T2 enhances water signal and CSF appears white.

What type of electrical activity does an ECG measure?

An ECG measures serial changes in the electrical activity of the heart.

What is the function of an endoscope?

An endoscope is a tube with a lens and light source used to visualize internal organs.

What are the signs of inflammation, known as cardinal signs?

The cardinal signs of inflammation are rubor (redness), tumor (swelling), calor (heat), dolor (pain), and functio laesa (loss of function).

What are neutrophils, lymphocytes, monocytes, eosinophils, and basophils collectively known as?

They are collectively known as white blood cells (WBCs). The mnemonic is 'Never Let My Engine Blow'.

What characterizes serous exudate?

Serous exudate is primarily fluid with little protein, typically seen in blisters.

What are the four stages of somatic death?

The four stages are algor mortis (cooling), livor mortis (pooling of blood), rigor mortis (stiffening), and postmortem autolysis (self-digestion).

What is a furuncle?

A furuncle is an abscess or infection of a sweat gland or hair follicle.

How does a white blood cell leave a capillary?

WBCs leave capillaries through margination, rolling, adhesion, and trans-migration (diapedesis).

What does the term 'putrefaction' refer to?

Putrefaction refers to the decaying process that results in a greenish color in the abdomen during decomposition.

What is the significance of McBurney's point during a physical examination?

McBurney's point is a landmark used to assess for appendicitis during a physical examination.

What condition is indicated by a positive psoas test?

A positive psoas test may indicate appendicitis due to irritation of the iliopsoas muscle.

What imaging technique is preferred for diagnosing appendicitis in adults?

CT scans are often preferred for diagnosing appendicitis in adults due to their detailed images.

How does mesenteric adenitis typically present in patients?

Mesenteric adenitis typically presents with abdominal pain, often mimicking appendicitis.

What are the common causes of cholecystitis?

Cholecystitis is commonly caused by gallstones blocking the cystic duct.

What is the role of lymphocytes in the immune response?

Lymphocytes play a key role in the adaptive immune response by recognizing and responding to specific pathogens.

What is the clinical significance of rigor mortis?

Rigor mortis indicates the stiffness of muscles after death, providing a timeline of postmortem changes.

What is the pathological significance of serous exudate in inflammation?

Serous exudate indicates mild inflammation, often associated with conditions like blisters.

What is the primary function of basophils in the immune system?

Basophils release histamine and other mediators in response to allergens and play a role in inflammatory responses.

What is the difference in imaging contrast between T1-weighted and T2-weighted MRI sequences?

T1-weighted sequences provide better contrast for fatty tissues, while T2-weighted sequences highlight fluids, making pathologies easier to identify.

Abscess

Circumscribed collection of pus and inflamed tissue.

McBurney's Point

Location of referral pain in appendicitis, approximately 2/3 from the umbilicus to the right

Appendicitis

Inflammation of the appendix, a small pouch that protrudes from the colon.

McBurney's Point

The point on the body that is 2/3 from the umbilicus to the hip, indicating potential appendicitis.

Rebound Tenderness

Pain experienced when pressure is removed from McBurney's Point after palpation.

Rovsing's Sign

Pain in the right lower quadrant when the left lower quadrant is palpated, indicative of appendicitis.

Psoas Test

A test for appendicitis that assesses the hip flexor muscle.

Heel Tap Test

A test where dorsiflexion of the ankle is followed by a tap on the heel to assess for appendicitis.

Obturator Test

A test involving internal rotation of the hip to assess for irritation of the obturator internus muscle.

Mesenteric Adenitis

Inflammation of the lymph nodes in the mesentery, often mimicking appendicitis.

Cholecystitis

Inflammation of the gallbladder, usually due to gallstones.

AAA (Abdominal Aortic Aneurysm)

An enlargement of the aorta in the abdomen, which can be life-threatening.

Crohn's Disease

A type of inflammatory bowel disease (IBD) that causes inflammation of the ileum, the third portion of the small intestine.

Symptoms

Subjective feelings reported by the patient, such as headaches.

Signs

Objective findings observed in physical examinations, such as edema.

Prognostic

Pertaining to predictions about future outcomes, often using scales like TNM.

Anamnestic

Related to the patient's past medical history.

Diagnostic

Tests or methods used to identify current medical conditions.

Pathognomic

Symptoms or signs that are specific to a particular disease or condition, allowing for a certain diagnosis.

OPQRST (Addressing Pain)

A mnemonic for assessing pain: Onset, Provocation, Quality, Radiation, Severity, and Time.

X-rays

Diagnostic imaging using electromagnetic radiation to visualize structures inside the body.

Barium Sulfate

A radiopaque contrast medium used to visualize the intestinal tract in X-rays.

Radiopaque Oil

A substance used in bronchograms to visualize blood flow through the lungs.

Cardiac Catheterization

A procedure to evaluate blood flow through the heart.

Intravenous Pyelogram

An imaging test used to visualize the urinary tract by injecting contrast dye.

Radiopaque Tablets

Tablets used to visualize gallstones in imaging studies.

Arteriogram

An imaging study that visualizes blood flow in arteries.

Radiopaque

Appears white on an X-ray film due to the absorption of radiations.

Radiolucent

Appears dark on an X-ray film, indicating less absorption of radiation.

CT Scan

A 2D X-ray image that can be stacked to create a 3D image for detecting organ abnormalities.

MRI (Magnetic Resonance Imaging)

An imaging technique that uses high-powered magnets to rearrange water molecules in the body, providing detailed soft tissue images.

MRI T1 vs. T2

Two types of MRI sequences; T1 enhances fatty tissue as white, while T2 enhances water as white.

ECG (Electrocardiogram)

A test that measures the electrical activity of the heart.

EEG (Electroencephalogram)

A test that measures electrical activity in the brain.

EMG (Electromyogram)

A test that measures the electrical activity of skeletal muscles.

NCV (Nerve Conduction Velocity)

A test that measures how quickly electrical signals move through the nerves.

Endoscopy

A procedure using a tube with a lens and light source to visualize internal organs.

Bronchoscope

An endoscope used to visualize the trachea and major bronchi.

Colonoscopy

An endoscopic procedure to visualize the colon.

Cystoscope

An endoscope used to visualize the bladder.

Laparoscope

A minimally invasive instrument used for viewing the abdomen.

Ultrasound

A diagnostic imaging technique that uses high-frequency sound waves to produce images of internal organs.

Necrosis

The premature death of cells and living tissue.

Dry Gangrene

A type of gangrene characterized by gray or black tissue, can develop into wet gangrene.

Wet Gangrene

Gangrene with greenish-white pus and a foul smell.

Caseous Necrosis

A type of necrosis with a cheese-like consistency and tannish-white color.

Fibrinoid Necrosis

A type of necrosis characterized by inflammation and deposits of fibrin in vessel walls.

Liquefactive Necrosis

A form of necrosis where tissue is transformed into a liquid viscous mass.

Gaseous Necrosis

A type of tissue necrosis characterized by the release of gas and exotoxins.

Stages of Somatic Death (1st)

Algor mortis, the cooling of the body to room temperature after death.

Stages of Somatic Death (2nd)

Livor mortis, the pooling of blood and fluid in dependent parts of the body.

Stages of Somatic Death (3rd)

Rigor mortis, the stiffening of muscles after death.

Stages of Somatic Death (4th)

Postmortem autolysis, self-digestive decomposition of tissues.

Postmortem Autolysis (1st)

Decomposition phase characterized by self-digestion.

Postmortem Autolysis (2nd)

Maceration, softening of tissues due to enzymes.

Postmortem Autolysis (3rd)

Putrefaction, decaying process where the abdomen turns greenish.

Postmortem Autolysis (4th)

Skeletonization, when no soft tissue is left and skeleton is exposed.

Noxious Gases from Protein Hydrolysis

Gases produced from the breakdown of proteins during decomposition.

Putrescine

An amino acid derived from ornithine, associated with the smell of decay.

Cadaverine

An amino acid derived from lysine, involved in the odor of decomposition.

Cardinal Signs of Inflammation

The four classic signs: redness, swelling, heat, and pain.

Rubor

Redness or erythema, a cardinal sign of inflammation.

Tumor (Inflammation)

Swelling or edema associated with tissue inflammation.

Calor

Increased heat in the inflamed area.

Dolor

Pain or nociception associated with inflammation.

Functio Laesa

Loss of function as a result of inflammation.

White Blood Cells (WBCs)

Cells involved in the immune response, including neutrophils, lymphocytes, and others.

Neutrophils

White blood cells comprising about 60% of total WBCs, first responders to infection.