Phagocytosis

PMNLs Plasma cellsMacrophage lymphocyteinflammation: seen here are mainly neutrophils, but there are also plasma cells, lymphocytes, and macrophages

CONT. INFLAMMATION

GRANULOMA

Granuloma:-It’s a type of chronic specific inflammation,

characterized by accumulation of tumor like masses .

-types :1-infective ,

2-non-infective.

Granuloma:The single tubercle composed of :

1-central necrotic tissue ,2-epithellioid cells,

3-lymphocytes and plasma cells ,4-langhans cell.

Tuberculosis-Tuberculosis , MTB or TB (short for tubercles

bacillus) is infectious disease caused by Mycobacterium tuberculosis

-It is usually attacks the lungs but can also affect other parts of the body.

-It is spread through the air when people who have active MTB infection cough, sneeze, or spit

1 -Early T.B in lymph node:

-Pale pink rounded tubercles among blue lymphoid tissue.-the tubercle is formed of : epithelioid cells, langhans gient cells &lymphocytes.

2 -Caseating T.B in LN

- it is characterized by acellular pink areas of necrosis surrounded by a granulomatous inflammatory process

-Caseous is a form of biological tissue death. Necrosis (death) Tuberculosis

3 -Chronic fibrocasious T.B in lung:

-large irregular areas of caseation appearing homogenous pink surrounded by tubercles reaction an fibrous tissue.

Bilharziasis

-It is a parasite infection by a trematode worm acquired from infested water. Also known as (schistosomiasis).

-it is can produce in liver, bladder, and gastrointestinal problems

4 -Bilharziasis in rectum:

Bilharzia ova deposited mainly in the submucosa -ova appear rounded or oval and yllowish refractile shell,degenerated ova are pink , while clascified ova are blue.-ova are surrounded by macrophages ,plasma cells, esinophils,lymphocytes & foreign body giant cells.

5 -Bilharziasis in Urinary Bladder:

-Bilharzia ova deposited mainly in the submucosa with less degree in other layers . -The ova surrounded by bilharzial rxn

6 -Bilharziasis in liver:

Bilharzias ova deposited in the portal tract.The ova surrounded by bilharzial rxn formed capilleries & new bile ducts.