What is this please?

Hi everyone, I really need help figuring what this is https://imgur.com/a/h7YL5g8 and if it is anything concerning like a tumor, I’ve had it since 2023 I believe it was visible but it wasn’t as big but I’ve gained weight since then even had it in 2024 (?) I’m 21M and I did have an ultrasound 2 days ago where the radiologist did my whole neck I believe and here are the results. If anyone knows or can help it would mean the upmost. Thanks) The two submandibular glands are presented with normal sizes and homogeneous structure. The parotid glands are depicted with normal sizes and homogeneous structure. The thyroid gland is of non-enlarged sizes. The structure is homogeneous, without palpable nodular lesions. The submandibular lymph nodes are bilaterally of normal sizes and preserved fatty center. Along the course of the sternocleidomastoid, the lymph nodes are presented with normal sizes and preserved echostructure. On the right they are up to 10/3 mm in size and on the left with up to 6/4 mm in size. The parajugular lymph nodes are of normal sizes and preserved fatty center. Occipitally on the right, two subcutaneously located lymph nodes with a total size of up to 7/5 mm and a single lymph node on the left with a size of up to 6/2 mm are visualized.