Brief Answer: Various causes, cause unclear now, causes listed Detailed Answer: Hello ma'am and welcome. Thank you for writing to us. I am sorry to hear about your husband's current presentation and the unfortunate delay in surgery, but I would like to point out that when such a sudden onset of edema is noted, there has to be an elaborate evaluation conducted. Reason being; that the cause for such a presentation could be any of the following conditions that I am going to list. It is sometimes difficult to point at one condition and suspect it to be the cause. So for your reference I shall list all the most likely conditions that can result in such a presentation, so you may discuss these causes with your husband's doctors, they are: -Cellulitis (as suspected) -Lymphedema -Venous insufficiency -Infections (should be taken care of by the antibiotics) -Heart failure: An EKG, 2D echocardiography should be conducted, as a mandatory protocol before surgery anyway -Renal failure: A blood investigation to check on renal function should be conducted -Allergic reaction: Blood test including eosinophil levels should help confirm/rule this out -Insect bite: Blood test including eosinophil levels should help confirm/rule this out -Systemic conditions: Eg, Systemic Lupus Erythematosus, scleroderma, mixed connective tissue disorder, rheumatoid arthritis, etc. -Smoking: History -Medications: Check medications in treatment chart -Thrombosis: Blood coagulation profile required -Injury and a few others. But these are the most likely causes ma'am. I understand how this can cause concern, but I am sure it is nothing serious and shall resolve in no time. Just make sure his doctors are being through in finding and treating the cause so he doesn't have to wait for surgery any longer. I hope you find my response both helpful and informative. Please feel free to write back to me for any further clarifications, I would be more than happy to help you. Best wishes.

---