Silicosis
Silicosis is the condition in which silicon dioxide (silica) is deposited in lungs.
It occurs when silicon dioxide is inhaled in rock quarries and mines or in any condition where rock is being cut or sandblasted.
Grossly,
1.      The lungs are nodular and firm due to fibrosis.
2.      Lungs may be pigmented as a result of concomitant anthracosis (silicoanthracosis).

Siderosis
Siderosis is the condition in which iron dusts (iron oxides, especially hematite) are deposited in lungs.
It occurs when iron dusts are inhaled in foundries or mines.
Grossly,
Brick-red color of the lungs is due to the presence of hematite or iron oxides.
Microscopically,
Iron can be specifically demonstrated with the Prussian blue reaction.

Asbestosis
Asbestosis is the condition in which asbestos is  deposited in lungs.
It occurs when asbestos is inhaled during mining, manufacturing, handling or removal of asbestos.
Asbestos is widely used in the manufacture of fire-retardant insulating materials.
In human, it causes bronchogenic carcinoma and mesothelioma of pleura and peritoneum.
Grossly,
The pleura is thickened and the lungs are firm.
Argyria/ Argyrosis

Related Posts:

  • Leprosy (Hansen’s disease) Known as Hansen’s disease, leprosy is a chronic infectious disease caused by acid fast bacillus, Mycobacterium leprae. In 1873, Dr. Hansen discovered bacteria in leprosy lesions, which rule out that leprosy is a hereditary… Read More
  • Diagnosis of Leishmaniasis Diagnosis of Visceral Leishmaniasis may require taking a blood sample and/or taking a biopsy from the bone marrow or splenic puncture to show the parasite. Diagnosis of Cutaneous Leishmaniasis will require a small biops… Read More
  • Collection, Storage & Transport of faecal sample Collection of stool 1.      Stools samples should be collected in clean leak-proof containers without disinfectant or detergent residue and with tight-fitting, leak-proof lids. 2.  &n… Read More
  • Factors involved in the transmission of Visceral Leishmaniasis Mode of Transmission Kala-azar is transmitted from person to person by the bite of the female phlebotamine sandfly, p.argentipes which is a highly anthrophilic species. Transmission may also take place by contamination … Read More
  • Sign & symptoms of Choleria Cholera is an acute infection of the gut, caused by ingestion of food or water contaminated with the bacterium Vibrio cholerae O1 or O139.  Other serogroups of Vibrio cholerae may cause diarrheal disease and other… Read More

0 Comments:

Powered by Blogger.

Visitors

224325
Print Friendly Version of this pagePrint Get a PDF version of this webpagePDF


 download University Notes apps for android

Popular Posts

Flag Counter