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    In the present study 75% cases were male and 25% were

    females.

    Pleural effusion affects either one or both sides. From the

    present study the distribution of affection are shown in the Table3.

    TABLE3

    SHOWING THE DISTRIBUTION OF 40 CASES OF PLEURAL

    EFFUSION AFFECTING ONE OR BOTH SIDES OF CHEST

    SIDES OF

    PLEURAL

    EFFUSION

    NUMBER

    OF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    Right 20 50.0

    Left 12 30.0

    Bilateral 8 20.0

    Right sided pleural effusion was found in 50% of cases as

    compared to 30% on left sides. Bilateral effusion was found in 20% of cases.

    The patients of the present study were presented with various

    symptoms which are shown in the following table.

    TABLE4

    SHOWING PRESENTING SYMPTOMS OF

    THE 40 CASES OF PLEURAL EFFUSION

    SYMPTOMS

    NUMBER

    OF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    Breathlessness 35 87.5

    Chest pain 21 52.5

    Dry cough 26 65.0

    Cough with expectoration 12 30.0

    Fever 24 60.0

    Night Sweat ]2 30.0

    Hemoptysis 5 12.5

    Others 18 45.0

    RESULTS AND OBSERVATIONS 62

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    The commonest symptom of presentation was breathlessness

    (87.5%). Dry cough and fever were present in 65% and 60% of cases

    respectively.

    The erythrocyte sedimentation rates (ESR) were examined in all

    40 cases of pleural effusion and the findings are shown in the following table.

    TABLE 5

    SHOWING ESR OF 40 CASES OF PLEURAL EFFUSION

    ESR(mmAEFH)

    NUMBER

    OF CASES(N = 40 )

    PERCENTAGE(%)

    010 1 2.5

    1120 3 7.5

    2130 6 15.0

    3140 7 17.5

    4150 4 10.0

    5160 6 15.0

    61 70 2 5.0

    7180 1 2.5

    8190 1 2.5

    90100 4 10.0

    > 100 5 12.5

    In the present study 90% of patients had an ESR above 20 mm

    AEFH.

    Sputum was examined for cytology in all the 40 cases of pleural

    effusion irrespective of parenchymal lesions present or absent and the results

    are shown in the following table.

    RESULTS AND OBSERVATIONS 63

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    TABLE6

    SHOWING THE RESULTS OF CYTOLOGICAL EXAMINATION OF SPUTUM

    SPUTUM EXAMINATION

    NUMBER

    OF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    Positive Gram stain for Pyogenic bacteris

    Positive ZiehlNeelsen Stain for AFB

    Positive pap smear for malignant cells

    Negative for pyogenic organism, AFB or malignant cells

    2

    5

    4

    29

    5.0

    12.5

    10.0

    72.5

    In the present study only 27.5% of 40 cases of pleural effusion

    had positive cytological examination of sputum for pyogenic organism, AFB

    and malignant cells. All other patients had a negative cytology.

    TABLE7

    SHOWING THE RESULTS OF THE SKIAGRAM

    OF CHEST OF PARENCHYMAL LESIONS ONLY

    RESULTS OF THE

    SKIAGRAM OF CHEST

    NUMBEROF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    Tuberculosis 8 20.0

    Malignancy 3 7.5

    Pneumonic consolidation 2 5.0

    No lung parenchymal changes 27 67.5

    In the present study 8 patients had tubercular lesions present inchest Xray and 3 had evidence of malignancy. Pneumonic consolidations

    were seen in two patients. In 67.5% of the cases (27) had no associated lung

    parenchymal changes.

    The pleural fluids from the 40 cases of pleural effusions on

    gross examination appeared as follows.

    TABLE8

    RESULTS AND OBSERVATIONS 64

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    SHOWING THE PLEURAL FLUID APPEARANCES

    OF THE 40 CASES OF PLEURAL EFFUSION

    PLEURAL FLUID

    APPEARANCE

    NUMBEROF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    Pale Yellow 30 75.0

    Hemorrhagic 7 17.5

    Turbid 3 7.5

    The pleural fluid appeared pale yellow coloured in 75% of cases

    and hemorrhagic in 17.5% of cases. In other 7.5% cases the pleural fluid was

    turbid.

    The pleural fluid was examined for cytology in all 40 cases of

    pleural effusion and the results obtained are shown in table 10.

    TABLE 9

    SHOWING THE RESULTS OF CYTOLOGICAL EXAMINATION

    OF PLEURAL FLUID OF 40 CASES OF PLEURAL EFFUSION

    Cells

    NUMBER

    OF CASES(N = 40 )

    PERCENTAGE

    (%)

    Lymphocytes:

    Few 29 72.5

    Plenty 7 17.5

    Pus Cells:

    Few 12 30.0

    Plenty 2 5.0

    RBC's: Few 6 15.0

    Plenty 7 17.5

    In majority of cases (72.5%) the pleural fluid contained few

    lymphocytes. Plenty of RBC's and pus cells were present in 17.5% and 5%

    cases respectively.

    RESULTS AND OBSERVATIONS 65

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    The pleural fluid was examined for AFB, malignant cells and

    culture for pyogenic organism and result are shown in the following table.

    TABLE11

    RESULTS OF POSITIVE PLEURAL FLUID EXAMINATION FOR AFB,

    MALIGNANT CELLS AND CULTURE FOR PYOGENIC ORGANISMS

    Pleural fluid for

    NUMBER

    OF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    Acid fast bacilli 4 10.0

    Malignant cells 3 7.5

    Culture for pyrogenic organism 2 5.0

    The etiologic diagnosis could be made in 22.5% of cases. Acid

    fast bacilli and malignant cells were demonstrated in 10% & 7.5% each and

    pyogenic organism was isolated in 5% of cases. In 31 cases (77.5%) all the

    smear studies were negative for AFB, malignant cells and culture for poygenic

    organism.

    Pleural biopsy was done in 11 cases of pleural effusion in thepresent study and the results are shown in the Table12.

    TABLE 12

    RESULTS OF THE PLEURAL BIOPSY IN

    SELECTED CASES OF PLEURAL EFFUSION

    PLEURAL BIOPSY

    RESULTS

    NUMBER

    OF CASES

    PERCENTAGE

    (%)

    Tuberculosis 8 20.0

    Adenocarcinoma 2 5.0

    Non Hodgkin's lymphoma 1 2.5

    TOTAL 11 27.5

    Pleural Biopsy was done in 11 cases & on comparing with the

    etiological diagnosis of 40 cases of pleural effusion, 20% of biopsy came out

    to be tuberculosis & 7.5% were malignancies.

    RESULTS AND OBSERVATIONS 66

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    TABLE 13

    THE CAUSES OF THE 40 CAUSES OF PLEURAL EFFUSION

    CAUSESNUMBEROF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    Transudates:

    Heart failure

    Cirrhosis

    Nephrotic syndrome

    Pericardial effusion

    6

    4

    3

    1

    15.0

    10.0

    7.5

    2.5

    Exudates :

    Tuberculosis

    Neoplasm

    Parapneumonic effusion

    Rheumatoid Arthritis

    15

    8

    2

    1

    37.5

    20.0

    5.0

    2.5

    Among the transudates 15% cases are caused by congestive

    heart failure and 37.5% of exudates are caused by tuberculosis.

    TABLE 14

    PLEURAL FLUID PROTEIN CONCENTRATION

    OF THE 40 CASES OF PLEURAL EFFUSION

    PROTEIN

    CONCENTRATION IN

    PLEURAL FLUID

    (g/dl)

    NUMBER

    OF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    1.02.0

    2.13.0

    3.14.0

    4.15.0

    3

    15

    0

    22

    7.5

    37.5

    0.0

    55.0

    In 55% of cases pleural fluid protein concentrations were above

    3 g/dl & in 45% the protein concentration was 3 or below 3 g/dl.

    The graphical representation of the above table is shown in

    Fig. 1.

    RESULTS AND OBSERVATIONS 67

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    TABLE 15

    SHOWING THE DISTRIBUTION OF PLEURAL FLUID

    TO SERUM PROTEIN RATIO

    PLEURAL FLUID

    TO SERUM

    PROTEIN RATIO

    NUMBER

    OF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    0.010.25

    0.260.50

    0.510.75

    0.761.00

    0

    17

    17

    6

    0.0

    42.5

    42.5

    15.0

    In 57.5% of cases pleural fluid protein to serum protein was

    above .5 & in 42.5% cases it was 0.5 or below 0.5

    The graphical representation of the above table is shown in

    Fig. 2.

    TABLE16

    SHOWING THE DISTRIBUTION OF PLEURAL FLUID LDH

    PLEURAL

    FLUID LDH

    (U/L)

    NUMBER

    OF CASES

    (N = 40 )

    PERCENTAGE

    (%)

    0200

    201400

    401600

    601800

    16

    3

    16

    5

    40.0

    7.5

    40.0

    12.5

    In 60% of cases Pleural Fluid LDH is greater than 200 U/L & in

    40% cases it is equal or less than 200 U/L.

    The graphical representation of the above table is shown in

    Fig. 3.

    TABLE 17

    RESULTS AND OBSERVATIONS 68

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    SHOWING THE DISTRIBUTION OF PLEURAL FLUID LDH TO SERUM LDH

    PLEURAL FLUIDLDH/SERUM LDH

    NUMBER

    OF CASES(N = 40 )

    PERCENTAGE(%)

    0.000.30

    0.310.60

    0.610.90

    0.911.20

    1.211.50

    2

    11

    10

    6

    11

    5.0

    17.5

    25.0

    15.0

    27.5

    In 67.5% of cases Pleural fluid LDH to serum LDH is above 0.6& in 32.5% it is equal or less than 0.6

    The graphical representation of the above table is shown in

    Fig. 4.

    TABLE 18

    SHOWING DISTRIBUTION OF SEAG [SERUMEFFUSION ALBUMIN

    GRADIENT] IN 40 CASES OF PLEURAL EFFUSION

    SEAG

    NUMBER

    OF CASES(N = 40 )

    PERCENTAGE(%)

    0.300.60

    0.610.90

    0.911.20

    1.211.50

    1.511.80

    1.812.10

    2.112.40

    3

    4

    19

    10

    3

    0

    1

    7.5

    10

    47.5

    25

    7.5

    0

    2.5

    In 35% of cases SerumEffusion Albumin gradient is above 1.2

    g/dl & in 65% of cases it is equal or less than 1.2 g/dl.

    The graphical representation of the above table is shown in

    Fig. 5.

    TABLE 19

    RESULTS AND OBSERVATIONS 69

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    SHOWING EXUDATES & TRANSUDATES SEPARATED BY PLEURAL

    FLUID PROTEIN OF 3 gms/dl IN COMPARISON TO THE

    ESTABLISHED DIAGNOSIS OF TRANSUDATES & EXUDATES

    TYPES OF

    PLEURAL

    FLUID

    ETIOLOGICALLY

    DIAGNOSED

    (N = 40)

    NUMBER OF

    CASES

    DIFFERENTIATED

    BY PLEURAL

    FLUID PROTEIN

    OF 3 g/dl

    NUMBER

    OF CASES

    TRULY

    CLASSIFIED

    NUMBER OF

    CASES

    FALSELY

    CLASSIFIED

    Exudate

    Transudate

    26

    14

    22

    18

    16

    14

    6

    4

    The Pleural fluid Protein of 3g/dl separated 22 cases (55%) as

    exudates & 18 (45%) as transudate. When etiology was reviewed 6 of the

    exudates & 4 of the transudates were fa lsely classified. A total

    misclassification of 25% occurred.

    The graphical representation of the above table is shown in

    Fig. 6.

    TABLE 20

    SHOWING EXUDATES & TRANSUDATES SEPARATED BY PLEURALFLUID PROTEIN TO SERUM PROTEIN OF .5 IN COMPARISON TO THE

    ESTABLISHED. DIAGNOSIS OF TRANSUDATES & EXUDATES

    TYPES OF

    PLEURAL

    FLUID

    ETIOLOGICALLY

    DIAGNOSED.

    (N = 40)

    NUMBER OF

    CASES

    DIFFERENTIATED

    BY P/S PROTEIN

    OF 0.5

    NUMBER

    OF CASES

    TRULY

    CLASSIFIED

    NUMBER OF

    CASES

    FALSELY

    CLASSIFIED

    Exudate

    Transudate

    26

    14

    23

    17

    18

    14

    5

    3

    The pleural fluid to serum protein ratio of .5 separated 23 cases

    (57.5%) as exudates & 17 (42.5%) as transudates. When etiology was

    reviewed 5 of the exudates & 3 transudates were falsely classified. Total

    misclassification of 20% occurred.

    The graphical representation of the above Table20 is shown in

    RESULTS AND OBSERVATIONS 70

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    Fig. 7.

    TABLE 21

    SHOWING EXUDATES & TRANSUDATES SEPARATED BY PLEURAL

    FLUID PROTEIN OF 3g/dl & PLEURAL FLUID TO SERUM PROTEIN

    RATIO OF .5 IN COMPARISON TO THE ESTABLISHED.

    DIAGNOSIS OF EXUDATES & TRANSUDATES

    TYPES OF

    PLEURAL

    FLUID

    ETIOLOGICAL

    DIAGNOSIS

    (N = 40)

    NUMBER OF

    CASES

    DIFFERENTIATED

    BY P.F. PROTEIN

    3g/dl & P/S OF 0.5

    NUMBER OF

    CASES

    TRULY

    CLASSIFIED

    NUMBER OF

    CASES

    FALSELY

    CLASSIFIED

    Exudate

    Transudate

    26

    14

    22

    18

    18

    15

    4

    3

    Pleural fluid protein of 3g/dl & p/s of .5 separated 22(55%)

    cases as exudates & 18(45%) as transudates. When the etiology was reviewed

    4 of the exudates & 3 of the transudates were falsely classified. Total

    misclassification rate of 17.55% occurred.

    The graphical representation of the above table is shown in

    Fig. 8.

    TABLE 22

    SHOWING EXUDATES & TRANSUDATES SEPARATED BY

    PLEURAL FLUID LACTATE DEHYDROGENASE (LDH) OF 200 U/L

    TYPES OF

    PLEURAL

    FLUID

    AETIOLOGICAL

    DIAGNOSIS

    (N = 40)

    NUMBER OF

    CASES

    DIFFERENTIATED

    BY PLEURAL

    FLUID LDH OF

    200 U/L

    NUMBER OF

    CASES

    TRULY

    CLASSIFIED

    NUMBER OF

    CASES

    FALSELY

    CLASSIFIED

    Exudate

    Transudate

    26

    14

    24

    16

    20

    13

    4

    3

    Pleural fluid LDH of 200 U/L separated 24 (60%) as exudates &

    16 (40%) as transudates. When etiology was reviewed 4 of exudates & 3 of

    transudates were falsely classified. Total misclassification of 17.5% occurred.

    The graphical representation of the above Table22 is shown in

    RESULTS AND OBSERVATIONS 71

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    Fig. 9.

    TABLE 23

    SHOWING EXUDATES AND TRANSUDATES SEPARATED BY PLEURAL

    FLUID LDH TO SERUM LDH OF O.6 IN COMPARISON TO THE ESTABLISHED

    DIAGNOSIS OF EXUDATES & TRANSUDATES

    TYPES OF

    PLEURAL

    FLUID

    AETIOLOGICAL

    DIAGNOSIS

    (N = 40)

    NUMBER OF

    CASES

    DIFFERENTIATED

    BY P/S LDH OF 0.6

    NUMBER

    OF CASES

    TRULY

    CLASSIFIED

    NUMBER OF

    CASES

    FALSELY

    CLASSIFIED

    Exudates

    Transudates

    26

    14

    27

    13

    24

    11

    3

    2

    Pleural fluid LDH to Serum LDH of .6 separated 27 (67.5%) as

    exudates & 13 (32.5%) as transudates. When the etiology was reviewed 3 of

    the Exudates & 2 transudates were falsely classified. Total misclassification

    of 12.5% occurred.

    The graphical representation of the above table is shown in

    Fig. 10.

    TABLE 24

    SHOWING EXUDATES & TRANSUDATES SEPARATED BY

    PLEURAL FLUID LDH OF 200 U/L & PLEURAL FLUID LDH

    TO SERUM LDH OF 0.6 IN COMPARISON TO THE

    ESTABLISHED DIAGNOSIS OF EXUDATE & TRANSUDATE

    TYPE OFPLEURAL

    FLUID

    ETIOLOGICALDIAGNOSIS

    ( N = 40 )

    NUMBER OF CASES

    DIFFERENTIATED BYPLEURAL FLUID LDH

    OF 200 U/L &

    P/S LDH OF 0.6

    NUMBER

    OF CASESTRULY

    CLASSIFIED

    NUMBER OF

    CASESFALSELY

    CLASSIFIED

    Exudate 26 28 26 2

    Transudate 14 12 10 2

    Pleural fluid LDH of 200 U/L & pleural fluid LDH to serum

    LDH of .6 seperated 28 ( 70% ) cases as exudates & 12 ( 30% ) as transudates

    RESULTS AND OBSERVATIONS 72

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    when etiology was reviewed 2 of the exudates & 2 of the transudates were

    falsely classified. Total misclassification of 10% occurred.

    The graphical representation of the above table is shown in

    Fig. 11.

    TABLE 25

    SHOWING NUMBER OF CASES SEPARATED BY SERUMEFFUSION

    ALBUMIN GRADIENT OF 1.2 g/dl IN COMPARISON TO THE ESTABLISHED

    DIAGNOSIS OF EXUDATES & TRANSUDATES

    TYPE OF

    PLEURAL

    FLUID

    AETIOLOGICAL

    DIAGNOSIS

    NUMBER OF CASES

    DIFFERENTIATED

    BY SEAG

    OF 1.2 G/DL

    NUMBER

    OF CASES

    TRULY

    CLASSIFIED

    NUMBER OF

    CASES

    FALSELY

    CLASSIFIED

    Exudate 26 26 25 1

    Transudate 14 14 13 1

    SerumEffusion Albumin gradient of 1.2 g/dl separated 26

    (65%) cases as exudates & 14 (35%) as transudates when etiology was

    reviewed only 1 exudate & 1 transudate was falsely classified. Total

    misclassification of 5% occurred.

    The graphical representation of the above table is shown in

    Fig. 12.

    RESULTS AND OBSERVATIONS 73

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    TABLE 26

    MEAN (M) VALUES, RANGES (R), STANDARD DEVIATIONS (SD),

    OF PARAMETERS STUDIED IN 40 CASES OF PLEURAL EFFUSIONS

    Parameter CharacterTransudates(N = 14)

    Exudates(N = 26)

    Tubercular(N = 15)

    Non

    Tubercular(N = 2)

    Neoplasm(N = 8)

    Others(N = 1)

    pvalue

    PleuralFluid

    Proteinof 3g/dl

    M 2.534 4.344 3.33 3.78 3.69

    R 1.923 4.184.69 1.924.69 2.734.63 2.414.52

    SD 0.344 0.143 0.946 1.34 0.898

    4.22