A member asked:

How can you tell the difference between a cysts or lipoma? i have a marble sized lump under skin. easily moves around with little pressure no pain

10 doctors weighed in across 3 answers
Dr. Thomas Deberardino answered

Specializes in Orthopedic Surgery

One way to determine if a subcutaneous mass is fluid filled (cyst) or more solid (lipoma) is to use a small penlight or similar. While in a darkened room you place the light source as close as possible to the cyst from one side or the other to see whether the light transilluminates the mass. If little light is visible across the mass, it is likely more solid. Positive light indicates fluidic cyst.

Answered May 17, 2018


Dr. Enrique Montana answered

Specializes in General Surgery

Cyst: fluid filled and Lipoma, Soft tissue solid filled.

Answered Sep 15, 2017


Dr. Ahimsa porter Sumchai md answered

Specializes in Sports Medicine

It can be difficult to tell the difference between a fluid filled cyst and a soft benign fatty lipoma if you are not a doctor. Both lesions present as soft well circumscribed lesions that are not painful and can be easily compressed. A fluid filled cyst demonstrates water properties...if you tap it you can elicit a fluid wave. Lipomas can be large and arise from subcutaneous fat under the skin.

Answered Sep 27, 2017



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