An interesting case of lymphadenopathy

A 43-year-old man, a known case of diabetes mellitus and hypertension (both well controlled), with no history suggestive of high-risk sexual behaviour, presented with a painless swelling over the left side of the neck since 30 days which was insidious in onset and gradually progressive; fever since 15 days which was of sudden onset, intermittent, relieved with medications and was associated with generalised bodyache; diarrhoea since 3 days which was sudden in onset, foul smelling, watery, non-bloody, 7–8 episodes per day. He had lost 4 kg of weight in 15 days. He was a vegetarian, did not keep cats as pets and was not known to be having an immunocompromised state. On clinical examination, only the lymph nodes in the posterior triangle of the left side of the neck were palpable. …