T4 patho midterm 2 Flashcards
Hemolytic Anemia
Premature RBC destruction
Jaundice due to hemoglobin breakdown and increase bilirubin in blood
Autoimmune Hemolytic Anemia-Warm AB AHA
Hemolysis due to anti RBC AB (IgG at 37degree C)
Idiopathic
Secondary to cancer and drug use
Autoimmune Hemolytic Anemia-Cold AB AHA
IgM AB presence at low temp
Idiopathic
infection, cancer
hereditary Spherocytosis
Autosomal dominant
**SPECTRA DEFECT-RBC vulnerability to destruc
Results in splenomegaly
European Descent
G-6-P dehydrogenase deficiency
MC in blacks, female children carry disease
Excess peroxide forms **Heinz bodies
**Favism from eating fava beans
Normal Hemoglobin
HbA- 2 alpha, 2 beta chains
HbA2- 2 alpha, 2 gamma chains
HbF- 2 alpha, 2 delta chains
Sickle Cell Anemia
Abnormal Hemoglobin (HbS) Intrincis hemolytic anemia MC in blacks Leads to splenic infection **Blood smear shows Howell Jolly Bodies
Thalassemia
Decreased or absent alpha or b chain hemoglobin
Beta Thalassemia
A.K.A Cooley Anemia
Most severe type
Decreased beta chain
MC in Mediterranean
Alpha Thalassemia
Mild hemolysis and anemia
**Tear drop cells in cell prep
Megaloblastic Anemia
B12 or folic acid deficiency
Due to tape worm, diet, pernicious anemia
**Leads to Beefy tongue
Iron Deficiency anemia
Most common type of anemia Leads to microcytic, hypo chromic anemia **Causes Plummer vision Syndrome Plummer syndrome Triad: 1. microcytic hypochromic anemia 2. esophageal webs 3. glossitis Causes cheilosis (cracking of lips)
Aplastic anemia
Decrease RBC, WBC, platelet
Aplastic anemia causes
MC=idiopathic
MC infection from Hep C
Aplastic anemia clinical signs
fanconi syndrome
Polycythemia
Increase erythrocytes
2 types of polycythemia
Relative and absolute
Relative polycythemia
Due to dehydration, stress, and decreased plasma
Absolute Polycythemia
Primary- Increase viscosity, unknown etiology, causes hepatosplenomegaly
Secondary- Increase erythropoeitin due to COPD, increase altitude, tumor
Leukopenia
Decrease WBC due to chronic viral infection
Leukocytosis
Increase WBC count
Leukomoid Rxn: WBC count=50,000cells/uL
Dohl Bodies present
Leukemia
Malignant neoplasm of bone marrow
in ribs, sternum, vertebrae, pelvis
Leukemia predisposing factors and symptoms
irradiation, drugs, down syndrome
hepatosplenomegaly and kidneys, adrenals, CNS issues leading to anemia
Acute Lymphocytic leukemia
Children 10 poor prognosis
Chronic Lymphocytic leukemia
Elderly >60yoa
50% die of infection
Acute Myelocytic Leukemia
MC adult leukemia
very poor prognosis
Chronic myelocytic anemia
Middle age
Philedelpha chromosome present
Thrombocytopenia
decrease platelet count leading to hemorrhagic disorder
Idiopathic thrombocytopenia
MC in children after viral infection
Autoimmune disease
Thrombotic thrombocytopenia purpura
Small vessel damage leading to RBC damage
MC in young women
Poor prognosis
Intrinsic clotting time
22-35sec
extrinsic clotting time
11-13 sec factor VII
Hemophilia A
Sex linked recessive, female gives to male
Factor VIII-C deficient
Von willibrands Disease
MC hereditary coagulation disease
Absence of VIII-C and VIII-VWF
Vit K deficiency
Fat malabsorption leading to decrease in Vit K
Vit K activates clotting factor 2,7,9,10
Disseminated Intravascular Coagulation
Intravascular consumption of clotting factors (platelets, fibrinogen, factor 5&8)
Due to sepsis, snake bit, etc
Hodkins Lymphoma (Pel Ebstein Fever)
Presence of Reed Sternberg Cells (owl eye appearance)
Malignant lymphoma
lymphocytic predominant hodgkins lymphoma
common in males <40 low prevalence (5%)
Nodular Sclerosing hodgkins lymphoma
MC type of hodgkins
MC in females
60% prevalence
Mixed Cellularity Hodgkins Lymphoma
2nd most common type
freq in men
Lymphatic Depletion hodgkins lymphoma
Men over 50
Fever, weight loss, night sweat
Non Hodgkins Lymphoma
No reed stern berg cells
Lymphodenopathy and hepatosplenomegaly
Nodular non hodgkins lymphoma
Nodular cells can infiltrate capsule
common in elderly, good prognosis
Diffuse non hodgkins lymphoma
lymph node is destroyed
Burkitts Lymphoma
Non Hodgkins lymphoma MC in african children/young adult Related to Epstein Barr virus Africans-effects mandible/maxilla Americans- effects abdomen
Multiple Myeloma
MC malignant plasma cell disorder and malignancy of bone due to increase IgG
Affects bone secreting Osteoclasts
Bence Jones Proteins
found in Multiple myeloma
Multiple myeloma effects:
middle age to elderly people with bone pain
Neuropathy, myelopathy
GI Epithelium
Simple columnar non ciliated (except esophagus and anal canal
Lamina Propria
made up of connective tissue
musculosa
inner circular and outer longitudinal smooth muscle
adventitia
CT and blood vessel
Mixed parotid tumor
MC tumor of salivary gland
W>M
may affect facial nerve
Peutz Jeghers syndrome
Autosomal dominant
Hard polyps in GIT with pigmentation around lips and oral mucosa
Trachea Esophageal Fistula
Esophagus connected to trachea
MC congenital esophageal anomaly
leads to pneumonia and electrolyte balance issue
Diverticulae
sac like protrusion of esophageal wall layers
Pulsion Diverticulum
False diverticular formed by weak muscle
Signs-Dysphagia, regurgitation of food
Zenkers Diverticulum
False or fusion diverticulum in upper esophagus
MC type of diverticulum
Leads to dysphagia and bad breath
Traction Diverticulum
True Diverticula
At lever of tracheal bifurcation due to TB infection
3T’s - Traction, True, TB
Achalasia
LES doesn’t relax due to neuromotor deficit
3 abnormalities of achalasia
Aperistalsis, some or no relaxation of LES, Increase tone of LES
Esophagitis
Inflammation, usually lower half
Can develop into Barretts esophagus
Barretts esophagus
Precancerous to adenocarcinoma
Columnar metaplasia to squamous epithelium
Benign Leiomyoma
Rare
Malignant squamous cell carcinoma
95% of all esophageal cancers
Blacks>whites
Predisposition by smoking, alcohol, achalasia
Adenocarcinoma
Arises from barrett esophagus
Pyloric Stenosis
M>F
Congenital abnormality with unknown etiology
Projectile vomiting and palpable knot
Hiatal Hernia
Stomach herniation thru esophageal hiatus or sal like dilatation
Sliding hiatal hernia
MC type due to short esophagus sliding thru diaphragm
Paraesophageal hiatal hernia
Gastric fundus rolls along esophagus thru hiatus into thorax
Can develop into barrette esophagus
Acute Gastritis
Direct infection (salmonella,H.Pylori,Virus,alcohol,smoking)
Chronic Gastritis
Achlorohydria destroying G cells due to old age and iron deficiency
Chronic Atrophic gastritis
affects funds as in pernicious anemia (autoimmune against parietal cells)
Peptic Ulcer
MC in first part of duodenum and lesser curvature of stomach
MC bacteria- H.Pylori
ANY AGE AFFECTED!
Duodenal Ulcer
Pain relief by eating
Gastric ulcer
pain increase by eating
Benign Leiomyoma of stomach
MC benign tumor of GIT in stomach
Hyperplastic Polyp
75-90% of all polyps-rarely malignant
Adenomatous Polyps
20%- slight risk of adenocarcinoma with polyp
Malignant Adenocarcinoma of Stomach
MC in lesser curvature and pyloric antrum
Increase incidence in Japan and Scandinavia
Predisposition- Genes, A blood type
5 forms of adenocarcinoma of stomach
- Fungating- polypoid ulcerating mass
- Ulcerative-Indurated base
- Early carcinoma- not in deep tissue
- Polypoid- Polyp projecting into lumen
- Diffusely Infiltrated- causes Linitus Plastica (thickened fibrotic wall)
Linitus plastica
caused by diffusely infiltrated form of adenocarcinoma of stomach
Kruckenburg Tumor
adenocarcinoma of stomach spreading to ovaries via lymph
Sentinel or Virchows node
Supraclavicular node metastasis via adenocarcinoma of stoamch
Meckels Diverticulum
Persistance of omphalomesenteric duct
2-2-2
2in long, 2%incidence, 2ft from cecum
Giardiasis (small intestine infection)
Most prevalent disease in US
Mainly in duodenum causing diarrhea, abdominal pain and anemia
SI malabsorption
Increase excretion of fat due to vitamin deficiency, mineral deficiency, carbs and protein deficiency
Celiac Sprue
Gluten Sensitivity leading to malabsorption
Autoimmune disease w/ AB against gluten
HLA-B8 relationship
Tropical sprue
Malabsorption due to chronic infection w/ E. coli
Whipples DIsease
Decreased lymphatic uptake of chyomicron in intestine
Less common than celiac sprue
Considered as infectious disease
Intussussception
One segment of bowel telescoping into another
MC-terminal ileum into cecum
Volvulus
Twisting of bowel around mesenteric root
MC-Sigmoid colon in elderly
MC- Cecum in young
Benign Leiomyoma of SI
MC location-Jejunem
Can lead to intersussception or volvulus
Cancer and Small intestine…
not common location
Carcinoid tumor
40% of cases occur in appendix
Arise from enterochromaffin cells secreting serotonin
Hirsch Sprungs Disease of Large intestine
Distended Colon
Increase incidence with down syndrome and chagas disease
Hirsch Sprungs disease common location
90% in rectum due to lack of meissners plexus ganglion
Pseudomembranous Colitis of large intestine
AB use causes overgrowth of norma flora creating infection (Ex: C. Diff)
Crohns Disease
Idiopathic granulomatous inflammation of large intestine involving all layers
Crohns disease incidence and location
MC in ileum and colon
Equal incidence in both sex, increase in jews
Ulcerative colitis
Genetic Chronic ulcer inflammatory disease involving rectum and left colon
Causes mucosal ulceration
Benign Adenomatous polyp
true neoplasm-more villous=more malignant
2 types: tubular adenoma and villous adenoma
Tubular adenoma
75% of all neoplastic polyps
positive family Hx
Villous adenoma
precancerous in rectum-large polyps
Familial polyposis
100% malignancy
Autosomal dominant-develops at 10-20yoa
Colorectal adenocarcinoma
MC cancer of colon
due to decrease fiber and increase fat
Duke staging of colorectal cancer
Stage A: Mucosa only Stage B1: into muscle B2: thru muscle, no node involvement C1: Thru muscle, lymph node involvement C2: Thru entire wall, node involvement D: Distant metastasis
A=Good
B=base invasion
C=carry to lymph
D=distant metastasis
Gilberts Syndrome
Decreased UDPG transferase leading to hyperbilirubinemia and chronic jaundice
Hereditary
Crigler Najjars Syndrome
hereditary Absence of glucuronide transferase enzyme->bilirubin encephalopathy->death
Dubin-Johnsons Syndrome
congenital Hepatocyte defect causing decreased conjugated bilirubin excretion
-Black hepatocytes seen (melanin pigment)
Rotors Syndrome
Simlar to Dubin Johnsons syndrome without melanin like look
Liver Cirrhosis
Diffuse nodular fibrosis of liver with irreversible scarring tissue
Alcoholic Cirrhosis
Liver fibrosis due to hepatocellular injury leading to hyperplasia
W>M
Acute Alcoholic Liver
Reversible hepatomegaly
Chronic Alcoholic liver
Irreversible fibrotic process leading to hepatic failure
Increase SGOT
Vascular Cirrhosis
Hepatic vein thrombosis
painful enlarged liver
Metabolic Cirrhosis-hemochromotosis
Idiopathic excess of hemosiderin (iron) in liver
Metabolic Cirrhosis-Wilsons Syndrome
Hereditary excessive copper disease
Kayser Fleisher Ring
Chronic Hepatitis Cirrhosis-HBV or HBC)
Persistant- Mild transaminases
Aggressive Hepatitis- Necrosis and fibrosis
Viral Hepatitis
MC cause of liver cell necrosis
Hep A-40% of cases
Enlarged liver, jaundice
Increased AST and ALT
Orally transmitted hapatitis
A and E
Blood transfusion transmitted hepatitis
C and G
Chronic hepatitis carrier
B and C
Liver cell adenoma
Vascular tumor assoc. with oral contraceptives and anabolic steroids
Malignant Hepatocellular Carcinoma
MC primary cancer
Males 40-60yrs old
Liver cirrhosis MCC
Increased AFT tumor marker
Angiosarcoma of liver
Vascular tumors due to vinyl chloride, arsenic, and thorotrast
Metastasis of Liver
MC type, more so than primary tumors