<unk>  (or<unk>  adenitis) is the most common form of<unk> is infections that appears outside the lungs.<unk>  is a chronic, specific granulomatous inflammation of the lymph node with caseation necrosis, caused by infection with Mycobacterium<unk> is or related bacteria. The characteristic morphological element is the<unk>  granuloma (caseating tubercule). This consists of giant multinucleated cells and (Langhans cells), surrounded by epithelioid cells aggregates, T cell lymphocytes and fibroblasts. Granulomatous tubercules eventually develop central caseous necrosis and tend to become confluent, replacing the lymphoid tissue.
Tuberculous lymphadenitis
Caseous lymphadenitis
Mycobacterial cervical lymphadenitis
Tick-borne lymphadenopathy
Primary mediastinal B-cell lymphoma
Dermatopathic lymphadenopathy
Sebaceous lymphadenoma
Extrapulmonary tuberculosis