P172 Lymph node- Tuberculosis

คำอธิบายชิ้นเนื้อ

Lymph node -Tuberculosis Tuberculosis is caused by Mycobacterium tuberculosis (TB) infection. This lymph node infected TB results from primary infection at the lung then the pathogen spreads hematogenously to the lymph node (extrapulmonary TB). Development of extrapulmonary TB can occur concomitantly with the primary infection or decades after when TB is reactivated. Lymph node is the most common form of extrapulmonary TB and accounts for roughly 30% of TB infected outside the lungs. The infected lymph node is enlarged and covered with thin fibrous tissue (fibrosis). Within the lymph node, the hallmark of TB infection can be seen as a cheese-like appearance lesion with yellowish-while color called caseous necrosis.