PATHOLOGICAL LANGUAGE AND TERMINOLOGY Flashcards
DEFINE PATHOLOGY
THE SCIENTIFIC STUDY OF DISEASE PROCESSES
WHAT CONSIST ANATOMICAL PATHOLOGY
- MORBID/POSTMORTEM ANATOMY
- SURGICAL PATHOLOGY
- CYTOLOGY
WHAT IS MORBID ANATOMY
AKA POSTMORTEM ANATOMY
WHAT IS SURGICAL PATHOLOGY
STUDY OF TISSUES REMOVED AT SURGICAL OPERATION
WHAT IS CYTOLOGY
THE STUDY OF INDIVIDUAL CELLS OBTAINED FROM A PATIENT
WHAT IS CHEMICAL PATHOLOGY
THE STUDY OF CHEMISTRY OF BODY FLUID SAND TISSUES
WHAT IS HEMATOLOGY
THE STUDY OF BLOOD AND ITS PROPERTIES
WHAT IS IMMUNOLOGY
THE STUDY OF IMMUNITY AND HYPERSENSITIVITY AND THE FORMATION OF ANTIBODIES
WHAT DOES MICROBIOLOGY ENTAIL
- BACTERIOLOGY
- VIROLOGY
- MYCOLOGY
- PARASITOLOGY
WHAT IS BACTERIOLOGY
THE STUDY OF BACTERIA THAT CAUSE DISEASE
WHAT IS VIROLOGY
THE STUDY OF VIRUSES
WHAT IS MYCOLOGY
THE STUDY OF FUNGI
WHAT IS PARASITOLOGY
THE STUDY OF PARASITES
WHAT IS EXPERIMENTAL PATHOLOGY
AN OBSERVATION OF THE CHANGES IN VISUAL APPEARANCE OF CELLS,TISSUES OR ORGANS AND THE ALTERATIONS IN FUNCTION WHICH ACCOMPANY THE CHANGES SEEN IS MADE. A HYPOTHESIS IS THEN FORMED AND AN EXPERIMENT CAN BE CONDUCTED PROVE OR REFUTE THE HYPOTHESIS
WHAT ARE SOME OF THE WAYS IN WHICH OBSERVATIONS CAN BE MADE
- PATIENT
- ORGANS AT SURGERY OR POSTMORTEM
- LIGHT MICROSCOPE
- ELECTRON MICROSCOPE
WHAT IS THE MAGNIFYING POWER OF A LIGHT MISCROSCOPE
X1000
WHAT IS THE MAGNIFYING POWER OF AN ELECTRON MICROSCOPE
X50000
OUR VIEWS OF THE PATIENT ARE LIMITED IN SPACE AND TIME. ELABORATE
MICROSCOPIC EXAMINATIONS AT VERY HIGH MAGNIFICATIONS ARE ONLY IN 2 DIMENSIONS AND REPRESENTS ONLY A VERY SMALL POTION OF TISSUE. HENCE THERE IS A POSSIBILITY FOR SAMPLING ERROR.
A DISEASE IS NOT A STATIC CONDITION BUT
A DYNAMIC AND CONTINUOUSLY CHANGING SERIES OF CONDITIONS. IE IT IS NECESSARY TO KNOW THE CHANGES THAT OCCUR AT EVERY STAGE OF THE DISEASE. FROM THIS KNOWLEDGE A DIAGNOSIS CAN BE MADE FROM WHAT HAS GONE BEFORE AND THE FUTURE CAN BE PREDICTED AND A PROGNOSIS GIVEN. HENCE WHEN A SPECIMEN FROM A SICK PATIENT IS EXAMINED IT SHOULD BE REMEMBERED THAT WHAT IS SEEN REPRESENTS ONLY ONE FRAME FROM A MOVING PICTURE.
DEFINE THE DISEASE
A CONDITION OF THE ORGANISM WHICH LIMITS IT LIFE IN EITHER ITS POWERS, ENJOYMENT OR DURATION (WHO)
DIAGNOSIS
THE IDENTIFICATION OF A DISEASE PROCESS
PROGNOSIS
A FORECAST OF THE COURSE OF DISEASE VIEWED IN THE LIGHT OF THE PATIENT’S SPECIAL CIRCUMSTANCES
AETIOLOGY
DESCRIBES THESE THREE CONCEPTS
1. THE CAUSE OR ORIGIN OF DISEASE
2. PREDISPOSING FACTORS
3. THE TRANSMISSION: THE MEANS BY WHICH THE PATIENT BECOMES EXPOSED TO THE CAUSATIVE AGENT
PATHOGENESIS
THE MECHANISM IN WHICH A PATHOLOGICAL CONDITION IS PRODUCED IE THE MECHANISM OF DEVELOPMENT OF A DISEASE STATE
THREE STEPS IN DIAGNOSIS OF DISEASE
- PHYSIOLOGICAL DIAGNOSIS: WHERE DISORDER OF FUNCTION IS NOTICED. WHAT IS THE TROUBLE?
- ANATOMICAL LOCALIZATION: LOCALIZING THE SYMPTOMS AND FINDING THE SEAT OF THE DISEASE
- PATHOLOGICAL DIAGNOSIS: THE ACTUAL NATURE OF THE DISEASE
PHYSIOLOGICAL DIAGNOSIS
WHERE THE DISORDER OF FUNCTION IS NOTICED
PATIENT COMPLAINS OF SYMPTOMS
THE DOCTOR ASKS THE PATIENT : WHAT IS TROUBLING YOU/WHAT IS THE MATTER?
ANATOMICAL DIAGNOSIS
STRUCTURE ALTERED: IE WHAT IS THE SEAT OF THE DISEASE
DOCTOR FINDS SIGNS
THE QUESTION ANSWERED IS WHERE IS THE TROUBLE?
PATHOLOGICAL DIAGNOSIS
DETERMINES THE ACTUAL NATURE OF THE DISEASE: DISEASE PROCESS IDENTIFIED
PATHOLOGICAL EXAMINATION
WHY? AND HOW?
CLASSIFY DISEASE INTO VAIOUS GROUPS ACCORDING TO AETIOLOGY
- CONGENITAL
- ACQUIRED
WHAT IS CONGENITAL DISEASE
A CONDITION WHICH IS PRESENT AT BIRHT
TWO FORMS OF CONGENITAL DISEASE
- INHERITED: TRANSMITTED BY GENES
- ACQUIRED DURING INTRAUTERINE LIFE
OF INHERITED TYPE OF CONGENITAL DISEASE
ARE TRANSMITTED BY GENES
EVEN THOUGH THE TENDENCY TO DISEASE IS PRESENT AT BIRTH, THE ACTUAL MANIFESTATION OF DISEASE MAY NOT OCCUR UNTIL ADULT LIFE
NAME THE CATEGORIES WITHIN THE ACQUIRED DISEASES
- INJURY
- INTOXICATION
- INFECTION
IE THE THREE I’S - DEFICIENCY DISEASES
- NEOPLASTIC DISEASE
- DEGENERATIVE DISEASE
- METABOLIC DISEASES
- ENDOCRINE DISEASE
- IMMUNE DISEASES
- PSYCHIATRIC DISEASES
NAME THE CATEGORIES WITHIN THE ACQUIRED DISEASES
- INJURY
- INTOXICATION
- INFECTION
IE THE THREE I’S - DEFICIENCY DISEASES
- NEOPLASTIC DISEASE
- DEGENERATIVE DISEASE
- METABOLIC DISEASES
- ENDOCRINE DISEASE
- IMMUNE DISEASES
- PSYCHIATRIC DISEASES
INTOXICATION
EXCESSIVE ALCOHOL INTAKE AND EFFECTS OF OTHER DRUGS AND CHEMICALS ON THE BODY
SCURVY
VITAMIN C DEFICIENCY
HISTORY OF SCURVY
USED TO OCCUR IN SAILORS WHO SPENT LONG PERIODS AT SEA LIVING ON PRESERVED FOODS AND TOTALLY DEPRIVED OF FRESH FRUIT AND VEGETABLES
NEOPLASTIC DISEASES
CHARACTERIZED BY THE OVERGROWTH OF TISSUES LOCALLY, CAUSING TUMORS
NEOPLASIA MEANS NEW GROWTH
CANCER
MALIGNANT TUMOR WHICH, IF UNTREATED, CAN SPREAD THROUGHOUT THE BODY AND KILL THE SUFFERER
DEGENERATIVE DISEASES
CAN AFFECT MANY PARTS OF THE BODY BUT PARTICULARLY THE ARTERIES AND THE JOINTS. FOR EXAMPLE ARTERIOSCLEROSIS AND OSTEOARTHRITIS
METABOLIC DISEASE
OCCUR WHERE THERE IS DISTURBANCE OF BODY’S NORMAL METABOLIC PROCESSES FOR EXAMPLE
- DIABETES
- GOUT
ENDOCRINE DISEASES
CHARACTERIZED BY THE OVERACTIVITY (HYPER-FUNCTION) OR HYPOFUNCTION OF THE ENDOCRINE GLANDS. FOR EXAMPLE
- THYROTOXICOSIS: OVERACTIVITY OF THE THYROID GLAND
IMMUNE DISEASES
THE IMMUNE SYSTEM WHICH RESPONDS TO FOREIGN SUBSTANCES OR ANTIGENS AND MAKES PROTECTIVE ANTIBODIES MAY GO WRONG IN THE FOLLOWING WAYS
- HYPERSENSITIVITY: AN EXCESSIVE RESPONSE TO ANTIGENS
- AUTOIMMUNE DISEASE: THE PRODUCTION OF ANTIBODIES TO THE BODY’S OWN TISSUES
- IMMUNE DEFICIENCY: MAY BE AS A RESULT OF CERTAIN DRUGS EG CHEMOTHERAPY, IMMUNOMODULATORY DRUGS EG TNF -a INHIBITORS AND SOME DISEASE STATES SUCH AS HIV
AUTOPSY
POST-MORTEM EXAMINATION THAT TRY TO DEMONSTRATE ANATOMICAL CHANGES IN RELATIONSHIP TO DISEASE.
WITH THE INVENTION OF THE MICROSCOPE. MORE DETAILED OBSERVATIONS BECAME POSSIBLE.
VIRCHOW (1821-1905)
HAS BEEN DESCRIBED AS THE FATHER OF CELLULAR PATHOLOGY
FOUNDED THE SCIENCE OF HISTOPATHOLOGY/TISSUE PATHOLOGY
PASTEUR
WAS USING THE MICROSCOPE TO DETERMINE THE NATURE OF SOME INFECTIOUS DISEASES.
ESTABLISHED THE SCIENCE OF BACTERIOLOGY
GROSS EXAMINATION
EXAMINATION OF THE BODY OR TISSUES WITH AN UNAIDED EYE
OUTLINE THE STEPS OF LIGHT MICROSCOPY
- TISSUES ARE FIXED IN FORMALIN OR ANY OTHER FIXATIVE
- TISSUES ARE DEHYDRATED
- THEN THEY ARE EMBEDDED IN PARAFFIN WAX
- VERY THIN SECTIONS (5Ų) ARE CUT
- THE SECTIONS ARE STAINED WITH HEMATOXYLIN EOSIN STAIN FOR EXAMPLE AND VIEWED BY THE LIGHT MICROSCOPE
HEMATOXYLIN STAIN WHICH PART OF THE CELL
NECLEI: BLUE
EOSIN STAINS WHICH PART OF THE CELL
CYTOPLASM: RED
MOST PATHOLOGICAL DIAGNOSES CAN BE MADE USING
SPECIAL STAINS TO DEMONSTRATE SPECIFIC SUBSTANCES OR STRUCTURES
IMMUNOFLUORESCENCE
SPECIFIC/MONOCLONAL ANTIBODIES CAN BE LABELLED WITH A DYE OR AN ENZYME WHICH ALLOWS FOR RECOGNITION OF SPECIAL ANTIGENS OR CELLS MARKERS IN OR ON CELLS
ELECTRON MICROSCOPE BENEFITS
PERMITS PATHOLOGISTS TO IDENTIFY VERY SMALL STRUCTURES WITHIN CELLS AND TISSUES HENCE AIDS :
- DIAGNOSIS OF UNUSUAL OR POORLY DIFFERENTIATED TUMORS
- THE DIAGNOSIS OF RENAL BIOPSIES AND MYOCARDIAL BIOSPIES