A week ago I noticed a lump about the size of a small marble under the right ear lobe. I went to the doctor last Tuesday and he performed a biopsy. Due to the holidays the results are not back yet. I have not been sick and I feel fine.It seems the lump appeared over night. I know I will get the results in 2-3 days but I am a little anxious. When the doctor saw it on the ultrasound he thought it is a cyst. I asked him how could he tell , he said by the density of it  but of course he was not sure. I glad he did the right thing with the biopsy right away.I am healthy  no illnesses and had a routine blood test done when I did my routine stress test and the reults were normal.
Hi. Thanks for your query and an elucidated history. The most probable diagnosis of a lump at an area you explained which has grown overnight is either an infected lymph node or an infected sebaceous cyst. Wait for FNAC report and till then take an antibiotic and anti-inflammatory medicines as suggested by your Doctor.