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1.In the symptoms and history suggest possible cause for the above symptoms are enlarged
lymph nodes.
2.In this case you need to get a through study about the
lung infection and its extensions. As lymph nodes enlargement is due to presence of any infection / inflammation or malignancies.
3.The other possible cause could be dilated and tortious veins and suspicious of
thrombosis - which need an upper limb vascular doppler study.
4.In this case you need to workup with the issues with
ultrasound, CT chest to evaluate the cause.
5.Suggest you to see your treating doctor / GP and request for further investigations and treatment.
Good luck.
Hope i have answered your query,
any thing to ask ? do not hesitate to ask.
http://doctor.healthcaremagic.com/doctors/dr-ganesh/62888