BIRADS 4: Suspicious Lymph Node

Hello everyone!

I am new to this community and find myself trying to gain some information on my recent Ultrasound results. But let me catch you all up.

In Feb. 2021 I noticed some swelling under my left armpit that has lasted about 2 weeks before seeing my GP (Mind you it was unable to be felt). I get an ultrasound which indicates 2 swollen lymph nodes - possibly reactive but to see a general surgeon if clinically applicable. I see the surgeon in March who then stated that since the lymph nodes aren't able to be felt, it's probably just reactive and the swelling under my left armpit is possibly due to breast tissue. I am then scheduled a follow up ultrasound in July 2021.

Within that time frame, I have had off an on fatigue and itchiness here and there. I was also sent to an Infectious Disease doctor due to some elevated CBC results. She ran a panel of tests all ruling out anything that could cause my lymph nodes to swell - I also wasn't sick with anything during this time as well. I had CT scheduled with her for my chest and now neck because my lymph nodes also became swollen in my neck but have since gone down. The CT has shown no axilla lymphadenopathy but a few sub centimeter nodes in my neck (likely reactive) back in May 2021.

I did my ultrasound for my follow up of my left axilla which now states:

Left BREAST BIRADS CATEGORY 4: SUSPICIOUS

RECOMMENDATION: If there is no clinical reason for reactive
lymphadenopathy, this would be amenable to ultrasound-guided biopsy if
clinically appropriate.

IMPRESSION:
1. Persistent mildly enlarged left axillary lymph node with eccentrically
thickened cortex measuring 1.1 x 0.9 x 1 cm.
2. Additional benign-appearing lymph node within the left axilla has
improved in size and morphology.

COMPARISON: Left axillary ultrasound dated 3/11/2021

FINDINGS: Targeted sonographic evaluation of the area of interest within
the left axilla was performed. There is a persistent mildly enlarged left
axillary lymph node with eccentrically thickened cortex measuring 1.2 x
0.9 x 1 cm (previously 1.1 x 1.2 x 0.6 cm). The cortex measures 6 mm.

A second benign-appearing lymph node within the left axilla measures 1.5 x
0.9 x 1.2 cm, has improved in size and morphology. No new suspicious lymphadenopathy.

Based on these findings, how would you interpret these results?

Thank you so much in advance for your help!

Jessica