Thanks for posting your query,
A movable lump that you have noticed over back of neck, most likely is a reactive lymph
node. These nodes may get enlarged during inflammation or infection.
The best way to approach this concern is to first get a Neck USG (Ultrasound
) done to identify the exact tissue which comprises the lump. This should preferably be done with a new generation 4D USG Scanner with Doppler. Next, a FNAC (Fine Needle Aspiration Cytology) will settle the diagnosis.
I hope this information has been both informative and helpful
You can consult me again directly through my profile http://www.healthcaremagic.com/doctors/dr-saurabh-gupta/64132
Dr Saurabh Gupta.