That small lump on the back of your knee might be a Baker cyst. They usually aren’t serious, but you should still see a provider ASAP.
What is a Bakers cyst?
Baker cyst Information Mount Sinai - New York
Baker's (popliteal) cyst: Treatments, symptoms, and causes
Baker cyst - Symptoms and causes - Mayo Clinic
Baker's cyst causes, symptoms, and treatment options (conservative vs. surgery)
Ruptured Baker's cyst: Symptoms and treatment
Baker's Cyst: Causes, Symptoms, Treatment
Baker's Cyst Symptoms, Causes, Treatment for Popliteal Cyst – Medical Wave
Posterior Knee pain & Swelling-popliteal cyst
What are the possible causes of a small Baker's cyst behind the right knee, considering there was no knee injury and no pain experienced while walking or jogging? - Poe
Osteo for Bakers Cyst Pain Behind Knee — Osteopath Hawthorn
Baker's Cyst Treatment Boston, Knee Osteoarthritis
Baker's Cyst: Care Instructions