ILO 1980 INTERNATIONAL CLASSIFICATION OF RADIOGRAPHS OF THE PNEUMOCONIOSES

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ILO 1980 INTERNATIONAL CLASSIFICATION OF
RADIOGRAPHS OF THE PNEUMOCONIOSES

• Ponglada Subhannachart, M.D.
• Chest Disease Institute

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????????? occupational lung disease

• Organic dust - natural
• - synthetic
• Inorganic dust ???? silica, asbestos, iron,
  barium, titanium, beryllium, tin, talc,
  aluminum
• Gas, Fume

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Pneumoconioses

• Inhaled dust f lt 5 m
• Lung fibrosis
• not include gas, fume,
• organic dust

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Disease produced CXR Pattern resemble
pneumoconioses

• 1. Widespread nodular pattern
• - miliary TB - fungal infection
• - metastasis - sarcoidosis
• - histiocytosis X - bronchiolo-alveolar CA
• - extrinsic allergic alveolitis - bronchiolitis
• - amyloidosis - rheumatoid lung
• - alveolar microlithiasis etc.

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Disease produced CXR Pattern resemble
pneumoconioses

• 2. Widespread irregular pattern
• - Chronic bronchitis - interstitial pulmonary
  edema
• - interstitial pulmonary fibrosis - lymphangitic
  carcinomatosis
• - unusual pneumonia - sarcoidosis
• - sensitivity pneumonitis - tuberculosis
• - bronchiolo-alveolar CA - rheumatoid lung
• - collagen disease - lymphangioleiomyomatosis

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Disease produced CXR Pattern
resemble pneumoconioses

• 3. Pleural change
• Pleural thickening Pleural calcification
• - post traumatic, old infection - post
  traumatic, old infection
• - pleural metastasis - pleural
  metastasis
• - CA(pancoast tumor) -
  hyperparathyroidism
• - mesothelioma - histoplasmosis
• - collagen disease - parasitic disease
• - sarcoidosis

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Local fibroproductive Tuberculosis
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Miliary Tuberculosis
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Pneumoconiosis
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ILO CLASSIFICATION

• ILO (International labour office) since 1950
• develop for surveillance purpose of airborne
  dust exposure
• now use classification 1980 with 22 standard
  films copying by American college of radiology
  to the another

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ILO CLASSIFICATION

• Cover all types of pneumoconioses
• does not define pathological entities
• does not define working capacity
• does not use in compensation purpose

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ILO CLASSIFICATION

• INTERNATIONAL USE FOR
• - epidemological research
• - surveillance of those industry
  occupations
• - for clinical purpose
• - for international comparability of
• pneumoconiosis statistics

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USES OF CLASSIFICATION

• CLASSIFICATION BASED ON
• - set of standard radiographs
• - a written text
• - a set of notes

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USES OF CLASSIFICATION

• NO PATHOGNOMONIC FEATURES OF DUST EXPOSURE
• - classify any parenchymal or pleural
• appearance consistent with
  pneumoconiosis
• - do no classify any appearance which are
• definitely not pneumoconiosis

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PARENCHYMAL ABNORMALITIES

• SMALL OPACITIES
• - shape -round
  p, q, r
• 
  -irregular s, t, u
• - perfusion ( 12 level
  0/- ??? 3/ )
• - extent ( ?????? 3
  zones )
• LARGE OPACITIES O, A, B, C
  

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PLEURAL ABNORMALITIES

• THICKENING
• - diaphragm yes / no
• - costophrenic angle yes / no
• - chest wall circumscribed
  (plaque) / diffuse
• -
  profile width ,extent
• -
  face on extent

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PLEURAL ABNORMALITIES (ll)

• CALCIFICATION
• - diaphragm extent
• - wall extent
• - other sites extent

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0THER ABNORMALITIES

• SYMBOLS
• 0
• ax, bu, ca, cn, co, cp, cv, di,
  ef, em,
• es, fr, hi, ho, id, ih, kl,
  pi, px, rp, tb
• OD
• OTHER COMMENT

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????????????????????????????

• ??????????????
• - X-ray machine
• - Film
• - Technique - ??????????, ????????????

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????????????????????????????

• ???????????????????
• - view box
• - distance
• - light
• - time

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????????????????????????????

• ??????????
• - variation in reader

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??????????

• ??????????????????
• - ????????????????? ?? ??? ???
• - ?????????? ?????????
• - ?????????????????????????????
• ?????????????????? ??????????????
• ???????????? ??? ???????????
• ??????????????????????

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??????????

• ?????????????????????? ???????????????? ILO
• ?????????????????????????????
  ??????????????????????
• ?????
• ???????????????????????????????????
  ??????????????????????????
• ???????????????? ILO ?????????
  ?????????????????????????
• ?????????????????Pneumoconiosis
  ?????????????????
• ( ?????????????????????????????????????????
  ???? )
• ?????????????????? ??????????????????????????
  ??? ???????????

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