Question: My son 35 yrs suffering for low grade fever for almost two months with little weight loss & excessive weakness he has been very active & highly energetic. Initially he suffered two times high fever 3-4 days wih urine infection 14 hpf pus cells & urine culture showing moderate growth of margenella margenil. Blood CBC showing wbc 15.5, neutrophils 87% & lymphocytes 10%. But fever resolved in a week but returned 7 days later.
This time,i.e., 14 days after first fever, his urine routine & culture both were negative and wbc was with in range 5.6 except lymphocytes 53% & neutrophils 40%, monocyte 4%. Fever low grade 99-100F in morning & evening, sometime in day also wih mild stomach pain. Antibiotics Cifi & Zifi continuing.

Another 14 days( in all one month) later His ultrasound showed border line splenomegaly, Widal test & malaria test negative. Urine routine & culture negative. Repeat CBC showed rising lymphocytes & monocyte ( 58% & 8%) and falling neutrophils 32%. LFT showed substantially high SGOT 219 & SGPT 363, GGT 118, Serum alkali phosphate high 133, kidney panel was normal. HIV test negative

Fever now only on and off occasionally but stomach upset and tremendous weakness with continuing dry coughing occasionally.
Above antibiotics stopped 3 days back.

His chest X-ray clear but chest CT scan
( abdomen-pelvis CT clear) showed hypodense lymphnodes in right hilar region with heterogeneous growth , size 8 mm on short axis. Any other characteristic feature was absent in CT test/abdomen-pelvis to indicate any possibility of TB.

Please suggest the diagnosis, further tests & treatment, any possibility of malignancy?
XXXXX