Hello and welcome to HCM,
Lumps under left and right arm could be due to
soft tissue swellings probably neoplasms.
The lesions could be due to neoplastic growth of soft tissue like
adipose tissue, smooth muscles, skeletal muscle, blood vessel,
lymph channels, etc.
Lymph nodes can also be present at this site, however, the swellings are soft.
Thus, possibility of lymph node is less.
An aspiration cytology of the swelling needs to be done.
In this investigation, cells are aspirated using a thin needle.
The aspirated cells are spread on glass slide, stained with appropriate stains.
On studying the cells under the microscope, the origin and nature of the lesion is determined.
Further management will be decided after the test results.
Thanks and take care
Dr Shailja P Wahal