Call us  +91 8010 33 55 66

Hi Guest                                                     

Full Body Health Checkup I
Price Rs. 2200.00
Discount Rs. 0.00
Payable Rs.2200.00
Book Now
Thallasemia Profile
Price Rs. 1800.00
Discount Rs. 360.00
Payable Rs.1440.00
Book Now
View Article
Article Views: 18
An overview of Pneumoconiosis
Posted on Aug 31, 2015
The term Pneumoconiosis includes group of lung diseases caused by the inhalation of particulate matter occurring in certain occupations. Inorganic dusts such as silica, asbestos or coal dust and organic dusts such as mouldy hay, cotton dust or sugar cane dust may lead on to pneumoconiosis.

At present several occupations are known to be associated with this risk. More and more entities are likely to be recognized with the expansion of industry. Development of the pathological lesion depends upon several factors such as the nature of the substance inhaled, the concentration in the atmosphere, duration of exposure, particle size, and responsiveness of the individual. When the particles are below 10 micrometer in size, they reach the alveoli and are carried by alveolar macrophages to the interstitial spaces where inflammatory reaction sets in. In many cases, the process continues over the years and leads to gross functional and structural changes resulting in severe morbidity. Coarser particles are arrested by the air passages and they do not reach the alveoli.

Lesions caused by inorganic dusts ranging from minimal inflammatory reaction around the dust particle to more marked changes like focal emphysema, interstitial fibrosis and calcification. Some dusts like asbestos are carcinogenic. In some disorders such as silicosis the host's immune mechanism is altered, making the subject more susceptible to develop tuberculosis.

Organic dusts which tend to be more widely distributed in the agricultural belts of India exert their deleterious effects in different ways- Irritation by their presence, hypersensitisation to the components of the dust or sensitization to fungal contaminants in the dust play varying roles on the ultimate outcome. They cause damage principally on the alveolar ducts to produce extrinsic allergic alveolitis.

The factors which lead to pneumoconiosis are:
  • Mechanical blockage
  • Chemical irritation of the air passage, e.g., chlorine and acid fumes
  • Direct toxicity to the lung parenchyma, e.g. phosgene, methyl isocyanate
  • Fibrosis e.g., silica
  • Hypersensitisation, e.g., dander of animals, fungi, cotton dust
  • Chronic granulomatous process, e.g., beryllium
  • Predisposition to secondary infection, e.g., silicosi predisposes to tuberculosis and Neoplasia e.g., asbestos

Genetic factors probably modify the susceptibility to develop pneumoconiosis. Susceptible persons show early signs of ill health, whereas the others are relatively immune. Other factors such as tobacco smoking, nutrition, and infections also may have possible roles in determining the final outcome in individual subjects. Industrial legislation requires adequate protective steps to be undertaken by establishments to safeguard against the development of pneumoconiosis amongst workers.
Written by : Lazoi Team
Read latest articles...
Read all articles of Lazoi Team
Tongue Biopsy: The procedure, risks, complications and more..Read More
All you want to know about antibiotic eye drops..Read More
Common signs and symptoms of dengue viral infection..Read More
Undergoing an Orthopaedic Surgery? Tips to select the right surgeon..Read More
Dorsal Sympathectomy: Procedure, risks, complications and more..Read More
Search Doctors by Speciality
Best Pediatrician in Delhi
Best Dentist in Delhi
Best Psychiatrist in Delhi
Best Neurologist in Delhi
Best Oncologist in Delhi
Best Acupuncturist in Delhi
Best Chest & Allergy in Delhi
Best Diabetologist in Delhi
Best Physiotherapist in Delhi
Best Gynecologist in Delhi
Best Cardiologist in Delhi
Best Pulmonologist in Delhi
Best Dermatologist in Delhi
Best Dietician in Delhi
Best Endocrinologist in Delhi
Best Nephrologist in Delhi
Best Orthopaedic in Delhi
Best Psychologist in Delhi
Best Homeopathy in Delhi
Best Urologist in Delhi
Best Ayurvedic in Delhi
Best Nutritionist in Delhi
Best Orthopaedic Surgeon in Delhi
Best Plastic-Cosmetic Surgeon in Delhi
Best General Physician in Delhi
Best General Surgeon in Delhi
Best Ear Nose Throat (ENT) in Delhi
Best Gastroenterologist in Delhi
Best Laparoscopic Surgeon in Delhi
Best Ophthalmologist in Delhi
Best General Practitioner in Delhi
Best Dermatologist in Mumbai
Best Dentist in Mumbai
Best Ear Nose Throat (ENT) in Bangalore
Best Gastroenterologist in Bangalore
Best Gynecologist in Noida
Best General Physician in Noida
Best Pediatrician in Noida
Best Plastic Cosmetic Surgeon in Noida
Best Dermatologist in Pune
Best Gynecologist in Navi Mumbai
Best Pediatrician in Bangalore
Best Ophthalmologist in Bangalore
Best Dentist in Gurgaon
Best General Physician in Gurgaon
Best General Practitioner in Gurgaon
Best Ear Nose Throat (ENT) in Gurgaon
Best Gynecologist in Mumbai
Best Gynecologist in Thane
Best Dermatologist in Bangalore
Best Pediatrician in Mumbai
Best Physiotherapist in Faridabad
Best Orthopaedic in Faridabad
Best Dentist in Faridabad
Best Ophthalmologist in Faridabad
Best Gynecologist in Pune
Best Orthopaedic Surgeon in Mumbai
Best General Practitioner in Bangalore
Best Ear Nose Throat (ENT) in Mumbai
Best Orthopaedic Surgeon in Faridabad
Book Diagnostics Tests Delhi/NCR
Book Health Packages Delhi/NCR
About Us
Press Releases
Terms of Use
Privacy Policy
Our Services
DocPractice™ Premium
Health Card
Hospital SignUp
Book Diagnostics Tests Delhi/NCR
Book Health Packages Delhi/NCR
Hospital listing
Diagnostic center
Contact us
Ecommerce Flow / Incorporated
Read Articles
Learn About Diseases
Learn About Diagnostic Tests
Learn About Generic Drugs
Social media
Follow us
Lazoi on Facebook Lazoi on Twitter Lazoi on Google Plus Lazoi on BlogSpot
Make online secure payment using

MasterCard  VISA  NetBanking 
Copyright © 2016 Lazoi Lifecare™ Pvt. Ltd. All rights reserved. Website Version 3.2.2