Thanks for the query
is not suggestive of cyst
or lymph node there is no chance of lymphoma
, because lymphoma is actually a condition in which lymph nodes are mainly involved. You should go for repeat ultrasound because most common cause of lump in armpit is lymph node enlargement then cyst or abscess
, may be nerve
swelling( very uncommon) or bony swelling( also very uncommon).
So I would suggest you for repeat ultrasound, because if there is really any swelling then USG must detect this.
I hope this answers your query well
Wish you and your family good health