Where is the abnormality?
Left side of the neck.
How can the abnormality be described?
Multiple enlarged neck clustered lymph nodes, with some of them showing necrosis.
What is the differential diagnosis?
Infectious lymphadenitis: such as TB or pyogenic lymphadenitis.
Metastasis: particularly from head and neck malignancies.
Treated lymphoma or lymphoma in immune compromised patient.
What is the final diagnosis
TB lymphadenitis
There are multiple enlarged deep cervical nodes. The largest at level V appears necrotic.
Most probable diagnosis is tuberculosis followed by lymphoma.