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94 Cards in this Set

  • Front
  • Back
What is Health?
- A STATE of complete PHYSICAL, MENTAL, and SOCIAL wellbeing, and not merely the absence of disease or infirmity.
-A PROCESS of CONTINUOUS ADJUSTMENT to the CHANGING (enviroment) DEMANDS of living and of the CHANGING MEANINGS we give to life
What is Disease?
- An ABNORMAL CONDITION that may IMPAIR bodily FX, cause Discomfort, Social Problems, Death.
What may diseases include?
1. Injuries
2. Disabilities
3. Disorders
4. Syndromes
5. Infections
6. Alterations of Behavior
7. Atypical Varioons of Structures and Fx
8. Neoplasms
Dz= abnormal fx or impairment
Pathology = is a _______ Discipline between ____ _____ and ____ ____.
(pathology is visual)
Pathology = is a _BRIDGING_ Discipline between _BASIC SCIENCE_ and _CLINICAL PRACTICE_.
General vs. Systemic Pathology:
1. General Pathology-
-ex:
- the Basic Rxn of Cells & Tissues to the Abnormal Stimuli that Underlie All Diseases.
=ALL organ systems
-Ex: Adaptation, Cell Injury & Death, Inflamation & Repair, Immunity, Genetic Disease, Neoplasia, Hemodynamics
General vs. Systemic Pathology:
2. Systemic Pathology-
ex:
-The specific responses of ORGANS and Tissues to stimuli:
ex: Cardiovascular system, GI system, Endocrine system, genitoruinary system, Hematopoietic system, Hepatobilary system, CT, CNS
Path: Academic Discipline vs. Medical Specialty:
1. Anatomic Pathology (med)-
-4 ex:
Anatomic Path- Diagnosis of disease based on the examination of TISSUES & CELLS
ex: 1. Surgical path, 2. Cytopathology, 3. Autopsy path, 4. Forensic path
Path: Academic Discipline vs. Medical Specialty:
2. Clinical Pathology (lab med)-
-6ex:
Clinical Path- Diagnosis of disease based on the analysis of BODY FLUIDS.
ex: 1.Clinical chem, 2.Hematopathology, 3.Blood banking & transfusion medicine, 4. Medical Microbiology, 5. Medical cytogenetics, 6. Immunology
What is a lesion?
Lesion- any clinical or molecular abnormality.
- Anything abnormal clincally or moleculuarlly
=>LESIONS CAN BE VISIBLE OR INVISIBLE
Examples of VISISBLE Lesions-
6 (but more than that)
1. Traumatic ulcer
2. Leukoplakia
3. Carious Lesions-(some xerostomia related caries)
5.Melonoma-Palatal Mucosa
6. Basal Cell Carcinoma
Visible Lesions:
1. Traumatic ulcer- is? Cancerous?
2. Leukoplakia- is?
3. Melonanoma- Palatal Mucosa- cancerous/ malaginant or beningned?
location importance?
1. Traumatic ulcer -discountity in the epithelium- Not cancer- just traumatic tumor
2. Leukoplakia- whice lesion calus like, can't be wiped away
3.Melonoma- Palatal mucosa= Lesion on palatal mucosa- not beigned, MOST COMMMON SITE FOR MELONAMOA= PALATE
Visible Lesions may range from the ____ to the ______
ex?
Visible Lesions may range from the _INSIGNIFICANT_ to the _GROTESQUE_
ex-Basal Cell Carcinoma- Advanced= has potential to evade locally
- Exepahlotrigeminal Angiomotosis- Sturge Weber syndrome= ANGIOMA
Why may a lesion be invisible? (location)
Example?
-Bc it is located deep within the body.
ex: lung cancer lesion in xray- metastic to gingiva
(Squamos cell carcinoma or bronchial carcinoma - metastic to gingiva before found)
-Breast cancer- metatsitc lesion of mandible bone.
Why else may a lesion be invisible?
3 examples:
BC it is a MOLECULAR LESION
ex: 1. PKU (phenylketonuria)
2. Schizophrenia
3. Diabetes Melitus
Lesion invisible bc it's a molecular lesion:
1. PKU-invisible BIOCHEMICAL Lesion
-Inherited by:
-Caused by:
-Problem w/phenylalanine:
-Solution:
-Diagnosis:
-Inherited by: Autosmal Recessive Disorder of Phenylalanine megabolism=> DEVELOPMETNAL dz.
-Caused by: MUTATION in the Enzyme that conversts Phenylalanine to Tyrosine (PHENLYALANINE HYDROXYLASE)
-Problem w/phenylalanine: It's TOXIC to DEVELOPING Brain & causes Profound, Irrreversible Mental Retardation (COGNITIVE DISORDER)
-Solution: resticted die
Diagnosis: - GUTHERIE TEST baby
what is the most common form of skin cancer?
Basal Cell Carcinoma
Taxonomy-
Science of Classification
Nosology-
Deals w/ Classification of Dz.
Naming a dz ideally should?
Give a clue to the CAUSE or ORGAN SYSTEM involved
Disease Names Change overtime/Not static: What is the name NOW?
1.Moniliasis-
2. Geographic Tongue-
3. Odontogenic Keratocyst-
4. Calcifying Odontogenic Cyst-
1.Moniliasis- CANDIDIASIS
2. Geographic Tongue- ERYTHEMA MIGRANS
3. Odontogenic Keratocyst- KERATOCYSTIC ODONTOGENIC TUMOR
4. Calcifying Odontogenic Cyst- CALCIFYING CYSTIC ODONTOGENIC TUMOR
Some Diseases have multiple names ex- what are they called NOW?
1.Periapical Cementosseus Dysplasia-
2. Paget Disease of Bone-
1.Periapical Cementosseus Dysplasia- CEMENTOMA
2. Paget Disease of Bone-OSTEITIS DEFORMANS
Some disease may be id by eponyms (person name):
1. lou Gehrig Disease-
2. Christmas Disease-
3.Lesch-Nyhan Syndrome-
4. Garlin Syndrome-
5. Garlin Cyst-
6. Pindborg Tumor-
1. lou Gehrig Disease-AMYOTROPHIC LATERAL SCLEROSIS
2. Christmas Disease- CLOTTING FACTOR 9 DEFICENCY
3.Lesch-Nyhan Syndrome- HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSERASE (HGPRT) DEFICIENCY
4. Garlin Syndrome- BASAL CELL NEVUS SYNDROME
5. Garlin Cyst- CALCIFYING ODONTOGENIC CYST
6. Pindborg Tumor- CALCIFYING EPITHELIAL ODONTOGENIC TUMOR
Diseases vary in their PREVALENCE:
Rare Disease= Ds w/ prevelance? = _____ disease
From rarre to common:
LOW
= ORPHAN's Disease
Rare--> common:
Ewing Sarcoma--> Garlin syndrome, Multiple Endocrine Neoplasia 2, sickle cell anemia, treacher collins, CF, Marfans.
What are the 4 Key aspects of a Disease Process?
1. Etiology
2. Pathogensis
3. Morphological Changes
4. Clinical significance
4 Key Aspects of Dz Process:
1. Etiology-
ex: Mucoviscidosis (Cystic Fibrosis)
- CAUSE of a Disease process
ex: CAUSE of CF= Mutation in CFTR (CF Transmembrane Conductance Regulator) Gene- Varying degress of gene
= Systemic Dz- effects lungs & pancreas)
4 Key Aspects of Dz Process:
2. Pathogenesis-
ex: Mucoviscidosis (Cystic Fibrosis)
-MECHANISM of Disease development
ex: MECHANISM of CF=Accumulation of Bacteria & degeneration of DNA & immune cells
=>Chloride channel fx- Absent or defected & Airways plugged with CF's thick, viscous mucus secretions.
*1.Defective PROTEIN product
2.Defective Chloride CHANNEL
3.Viscous SECREATIONS
4.Ineffective CLEARANCE
5.Plugging & INFECTIONS
6. Tissue DAMAGE
4 Key Aspects of Dz Process:
3. Morphological Changes-
ex: Mucoviscidosis (Cystic Fibrosis)
-STRUCTURAL Changes induced in cells & organs
Ex- Struct/fx- Airways, liver, pancreas, si, skin (sweat glands)
4 Key Aspects of Dz Process:
4.Clincial Significance-
HOW CF DIAGNOSED??
- FUNCTIONAL consequences of the Morph changes
DIAGNOSED: Sweat Cholride Test
What are the 6 Categories of Disease?
1. Developmental
2. Infectious
3. Neoplastic
4. Metabolic
5. Immune Mediated-
6. Reactive-
Catergories of Dz-6:
1. Developmental-
-3 ex
1. Developmental- Genetic, environmental Infleuenced
ex: 1. Cherbuism- Autosomal Dominant- chubby cheecks, radioluceny trhogught jaw- expansion of jaw
2.Gardner Syndrome- A.Domninant- A familial intestinal polyposis syndrome (oolyposis of colon- pink lesion- malignant trasformation-remove to reduce colon cancer)
3. amelogensis Imperfecta- chalky looking enamel- easily fractures (misdiagnosis0 sever Flurosis)
Catergories of Dz-6:
2. Infectious-
Ex-3
2. Infectious- Bacteria, Viruses, Fungi
Ex: 1. 1' Herpetic Gingivostomatitis- (80% of pop infected w/ herpes)- subclinical- fever, multiple ulcers--> VIRAL Dz
2. Acute Pseudomembraneous Candidiasis- Yeast infection= Thrush- wipes off
3. Histoplasmosis- 1' lung infection, (ms, valves, fever???) -misdiagnosised: infection/neoplasm
Catergories of Dz-6:
3. Metabolic-
Ex-2
3. Metabolic- Endocrine
Ex:
1. Acromegaly- Growth hormone- secreting pituitary Adenoma-(condyle response- proliferation to class3 due to response to GH.. Pathogensis)
2. Hypothyrodism- short stature, generalized delayed dental erruption= young dental age
Catergories of Dz-6:
4.Neoplastic-
ex-5
4.Neoplastic-benign, malignant
ex: 1. Squamous Cell Carcinoma-stony hard
2.Metastic Brochogenic Carcinoma to gingiva- oral-lung cancer metastic to gingiva
3.Acute Leukemia- -biopsy- generalized enlargement to lungs
4. Hemangioma- benign vascular -bloodvessles- enlargement (ex tongue)
5. Neurofibromomatosis- lesions on skin- non painful, oral mucoasa.= ADinherited.
Catergories of Dz-6:
5. Immune- Mediated
ex-4
5. Immune-mediated- Allergy, hypersensititvitym autoimmunity
Ex: 1. Recurrent Apthous (ulceration) Stomatitis- Minor Aphtha- WBC T-lymph- below mucosa & attack mucosa - no scar
2. Mucous Membrane Pemphigoid- Desquamative Gingivitis- epithelium sluff off- # of dz can cause this
3.Autoimmunine Thrombacytopenic Pupura- AB to platlets sequestered to spleen=> Level of Platelets DECREASE - bleeding into skin (redish-purplen dots on skin) = Decrease level of platlets leads to this dz.
4. Allergic Conctact stomatitis- Buccal mucosa irritation- immune mediatead mucositious- to cinamon in gum- allergy or nickle allergy
Catergories of Dz-6:
6. Reactive-
3ex-
6. Reactive- TRAUMATIC, physical, chemical, factitial (pt. caused), iatrogenic (unknown caused) injuries.
=> Body Rxn to irritant.
ex: 1. Pyogenic Granuloma-proliferation of blood vessels- (ex calculous bridge holding tooth in)
2. Gingival Hyperplasia (generalized)- Diabetes Melluties
3. Trigeminal Neuroaliga- Episodic triger zone = vigourous tooth brushing.
4- ish ( dental hypoplasia- rxn to radioation in childhood- or DEVELOPMETNAL**)
Stages in the Cellular Response to Stress and Injury- 6 ish
1. Normal Cells (homeostasis)--> injury or stress to cells-->
2. Adaptation ( Hypertrophy, hyperplasia, atrophy, metaplasia) -->
Morphologic Alterations (steps 3&4)
3. cell Injury -->
4. Reversibile cell Injury-->
5.Irreversible Cell Injury-->
6. Cell Death ( apoptosis or necrosis)
What is hypertrophy?
-Increase Size of an organ due to the Increased SIZE of its cells, w/out an increase in cell 3 (hyperplasia)
Where is pure hypertrophy occur?
Only in skeletal and Cardiac Muscle
Increased size of salivary glands- Parotid and submandibular Increases in alcholics causing SIALADENOSIS0 also in bulimics- what is this due to?
hypertrophy
what is Hyperplasia
2- forms
-Increase Size of tissue or organ due to INCREASED # of Cells.
2 forms- (mostly smooth m.)
1. Physiologic
2.Pathologic
Some Hyperplasia's are physiologic-3
1. Erythroid Bone Marrow hyperplasia at high altitudes- bone marrow repicate to store more O2.
2. Cyclic Enlargement of Endometrium & Breast during Menstrual Cycle ( back to normal after)
3. Regrowth of Liver Parenchyma after surgical excision is Compensatory
Some hyperplasias are pathologic-1
1. Epithelial hyperplasia caused by HPV- on lip cauflower looking - squamos carcinoma
Hyperplasia may be combined with Hypertrophy- 2
1. Enlargement of uterus of pregnancy, myometrial smooth muscle cells increased
2. Benign Prostatic Enlargement
Hyperplasia's:
1. Fibrous Hyperplasia-
2. Inflammatory papillary Hyperplasia-
Both due to ill fitting dentures
1. Fibrous Hyperplasia- fibroma-tissue
2. Inflammatory papillary Hyperplasia- palate
Hyperplasias:
3. Osseous Hyperplasia-
4. Sub-pontic Osseous Hyperplasia-
3. Osseous Hyperplasia- HARD TISSUE - bony hard- above teeth in gums=Exostosis= bone proliferation
4. Sub-pontic Osseous Hyperplasia- Reactive lesion- w/ dentures= bone proliferation- reactive to contents in anatomical location
Hyperplasias:
5. Hyperplastic Dental Follcle-
6. Condylar Hyperplasia-
5. Hyperplastic Dental Follcle-Enlarged radiolucency follicle.
6. Condylar Hyperplasia-Idiopatic Unilateral growth of mandibular condyle ( clinically- facial assymetry= open bite)
Hyperplasias:
7. GINGIVAL HYPERPLASIA
-9 (5 dz)
1.Inflammatory Hyperplasia-Due to poor hygiene and diabetes
2. Drug-Induced Enlargement- Ca+ Channel Blocker, Cyclosporine, dilantin
3. Leukemic infiltrates
4. Amyloid Infiltration
5. Klippel-Trenaunay Webber syndrome
6. Juvenile hyaline fibromatosis
7. Cowden Syndrome
8. Wegener Granulomatosis
9. others- ooo
Hyperplasias:
8. Gynecomastia-
Hyperplasia of male breast
- hormone secreating tumor that causes this
What is Atrophy and what are the 2 types?
Atrophy- Reduction of Size of Cells, Tissues or Organs
2 types: Pathologic & Physiologic atrophy
Pathologic Atrophy-2
Pathologic Atrophy-
1.atrophy of SKELETAL MUSCLE following DENERVATION- loss of innervation to skeletal m.
2.Atrophy of the BRAIN due to Ischemia
Physiologica Atrophy- 2
1. Atrophy of the uterus after pregnancy- back to normal
2. Involution of the thymus in early adult life
Pathologic Atrophy may result from: 6 things-
1. Disuse- don't use lose- cast
2. Denervation- nerve supply compromised
3. Lack of Trophic hormones
4. Ischemia- Reduction in Blood Supply
5. Malnutrition
6. Idiopathic- Romber syndrome- hemofactial atrophy)
Atrophy of Brain in Atherosclerotic dz or alzheimer dz- what happens?
Gyri- narrower
Sulcus- wider
What is metaplasia?
The replacement of 1 Mature Cell Type by another 1, so it can netter cope in its present environment
- usually a "tougher" cell type
What is the metaplasia that occurs in smokers?
Replacement of Bronchial STRATIFIED COLUMNAR epithelium by SQUAMOUS Epithelium = SQUAMOUS METAPLASIA- protects for litmited amt of time
What is the Intestinal Medipalsia of the esophagus called and waht is it caused by?
Barrett's esophagus- Caused by chronic irritation by gastric juices in GASTROESOPHOGEAL REFLUX.
IS metaplasia reversible?
YES reversibly and tissuye reverts back to its normal state after irriatnt has been removed
HOWEVER, if irritant persists, metaplasia may progress to dysplasia and the to NEOPLASIA!
Necortizing Sialometaplasia
- Palate only= reactive condition
- salivary gland tissue=> squamos tissue
How Cells adapt to NON-LETHAL INJURY-
Adaptive-4
vs.
Non-adaptive- 2
Adaptive- hyperplasia, hypertrophy, atrophy, metaplasia
NON-ADAPTIVE:
1. Aplasia
2. Hypoplasia
Agenesis?
- Complete absence of an organ (organ was never there)
(aplasia -used sometimes but not same meaning)
Aplasia?
Absence of an organ w/ retention of the organ rudiment.
(Agensis- -used sometimes but not same meaning)
Reacher Collins Syndrome
Mandibulo-Facial Dysplasia
- Agenesis of exterior portion of ear
Agensis vs aplasia in a radio graph of teeth- missing vs smaller than normal??
Agensis= congenitally missing
Aplasia- teeth present but smaller than normal
Hypoplasia?
Incomplete development of an organ
-Organ never reaches its normal size
Dysplasia?
= Abnormal Formation.
bad growth, pre malignant lesion...
Epithelial dysplasia-
Can appear red, white, or both, abnormal maturation of epithelial cells
-precancerous biopsy used
Ectodermal Dysplasia-
Not precancerous
-Ecto derm- skin, hair, sweat glands
Fibro-osseous dysplasia
commonly seen in jaw bone radiolucent radiograph
Fibrous Dysplasia
Enjlarged jaw- tumor in jaw, causes expansion of the mandible
Reversible Changes (cells?)
1. Cellular swelling (hydropic, casuclar, change)
2. Fatty Change- LIVER-> alcholoics go back unless too far
Irreversible changes (cells)
- now get cell death- which occurs in 1 of 2 ways:
1. necrosis
2. apoptosis
(mechanism difference between the 2)
Necrosis-
Enxymatic digestion & leakage of cellular contents
- messy, cells break down, inflame cells,
Apoptosis-
Phagocytosis of apoptotic cells & fragments. -death of cell 1 at a time--> clean- macrophages there handy to clean things up.
What are the 3 nuclear changes that signal cell death in NECROSIS?
1. Pyknosis
2. Karyorrhexis
3. Karyolysis
Nuckear changes that signal cell death in Necrosis:
1. Pyknosis-
-small, dark, & shrunken nucleus..
(dark nucleus=hyperchromatic)
Nuckear changes that signal cell death in Necrosis:
2. Karyorrhexis-
-nuclear fragmentation.
(-nuckeus in small pieces)
Nuckear changes that signal cell death in Necrosis:
3. Karyolysis
- dissolution of the nucleus.
(Can't really see anything)
What tells you Whether cells have DIED or not? (in Necrosis?)
The NUCLEI
(-Pyknosis, karyorrhexis, karolysis)
What tells you HOW the cells have Died?? (in Necrosis?)
-4General tissue patterns of necrosis
the CYTOPLASM
- 1. Coagulative necrosis
2. Liquefactive necorsis
3. Casseous necorsis
4. Fat necrosis
-4 General tissue patterns of necrosis (Cytoplasm-How cells have died)
1. Coagulative necrosis-
- Typically seen in HYPOXIC Injury (myocardial infarct)
(-Most often seen in heart, but can see in kidneys)
-->Have Basic Shape but No Internal detail
-4 General tissue patterns of necrosis (Cytoplasm-How cells have died)
2. Liquefactive necrosis-
Typically seen in bacterial infections!
-(Brain- cerebral infarcts, and Abcess formations- pus)
-4 General tissue patterns of necrosis (Cytoplasm-How cells have died)
3. Caseous necrosis
Necrotic tissue is converted into a Cheesy Mass (Tuberculosis)
-(Can't tell granulomatous inflamation??????? idk?)
-4 General tissue patterns of necrosis (Cytoplasm-How cells have died)
4. Fat necrosis-
Characteristically seen in ACUTE Pancreatitis
Apoptosis-
Programmed Cell Death through Activation of an INTERNAL SUICIDE PROGRAM
( very clean, engineered celll sucided, neat & clean)
What is Capsases?
What does Capases fx/do?
Capases- Enzyme responsible for Apoptosis of selected unwanted cells,
Capases fx:-Selectively Eliminates unwanted cells w/minimal disturbance to the surrounding cells.
In Apoptosis- after capases selectively eliminates the unwanted cell- what happens to the cell and its parts (PM, etc)?
The PM- remains intact but its structure is Altered so that it becomes a Target for Phagocytosis
-The dead cell is Rapidly Cleared before its contents have leaked out &therefore does NOT elicit an INFLAMMATION reaction. (inflamation is what cuases messy necorsis)
Apoptosis: Physiologic vs. Pathologic
1. Physiologic- 4 examples of when
1. Programmed destruction of cells during embryogenesis
2. Hormone-dependent Involution of Tissues in the Adult
3.Deletion of potentially harmful Self-reactive lymphocytes
4. Cell Death induced by cytotoxic T-cells (Virally-infected or neoplastic cells)
Apoptosis: Physiologic vs. Pathologic
2. Pathologic-4 examples of when apoptosis is pathological
1. If DNA repair mechanism can't cope w/damage, the cells kills itself by apoptosis. ( if dna can't repair)
2. Cell death in certain viral infections (hepatitis)
3.Pathologic atrophy in organs after obstruction. (ex salivary glad tissue -atrophy &individual cells death-apop)
4. Cell Death in Tumors*
What are the 2 typpes of Pigments?
1. Exogenous Pigments
A.Carbon- anthracosis (air polutant)
B.Tatooing -skin & mucosal tattoos. (amalagam embedded in tissue)
2.Endogenous Pigments
A.Lipofucscin
B. Melanin-formed in mylanocytes
c. Hemosiderin-hemoglobin derived
d. Bilirubin
2 Pigment types
1. Exogenous Pigments
- 2 ex
1. Carbon- anthracosis (air polutation.
2. Tatooing -skin & mucosal tattoos. (amalagam embedded in tissue)
2 Pigment types
2.Endogenous Pigments
-4 ex
1. Lipofucscin- yellow brown- aging pigments- wear & teat, move free.??
2. Melanin-formed in mylanocytes- dark
3. Hemosiderin-hemoglobin derived =>By product of RBC contains iron
4. Bilirubin-By product of RBC but does NOT contain Iron
What is a Pathologic Calcification?
What are the 2 types of Pathologic Calcification?
Pathologic Calcification- the Abnormal Deposition of Calcium Salts in Tissue
2 types:
1. Dystorphic calcifications
2. Metastatic calcifications
2 types of Pathologic Calcification:
1. Dystrophic Calcification-
- Occurs in NONViable tissues or Dying tissues in the presence of Normal Serum Calcium levels
2 types of Pathologic Calcification:
2. Metastatic Calcification-
Occurs in VIABLE tissues & is associated with Hypercalcemia
(serum calcium is elvated)