Scattered lymph nodes throughout the cervical, submandibular, submental and supraclavicular and retropectoral regions subcentimetre in size.

Usual. There are many there. If tender, relates to some inflammation in the area, or sometimes a viral illness like mono. If non tender and enlarging , some other concerns. Supraclavicular can relate to pulmonary or intra thoracic issue. See your pcp and perhaps some x-rays and occasionally even a biopsy if indicated.