Unilateral Leg Swelling should be categorized as Acute vs Chronic. Etiologies are Venous stasis, Lymphedema, trauma or infections.
Varicose Veins - Physiopedia
Lymphedema - Wikipedia
Approach to Leg Edema of Unclear Etiology
Lower Extremity Edema – Causes, Treatment, and Prevention
Venous Insufficiency: Background, Anatomy, Pathophysiology
What will be the reason for being swollen in only one leg, mainly the left leg? - Quora
Phlebolymphedema: an up-to-date review - Servier - PhlebolymphologyServier – Phlebolymphology
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Verrucous Cobblestonelike Papules and Nodules of the Right Lower Limb
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Can venous insufficiency appear outside the legs, such as the arms, face, and abdomen? Is there a medical term for this outside of CVI? - Quora
A 61-year-old woman with chronic leg lymphedema managed with complete decongestive therapy
Template:Unilateral leg swelling DDX - WikEM
Unilateral Leg Swelling: Is it Always Vascular? - Precision Vascular