Would somebody tell me how much these dang fibroid tumors weigh?

Natural progression after viewing fibroid pictures. With all the shapes and sizes, you can see why getting an answer to the fibroid weight question can prove difficult.

Lots of thoughts about this in another post. The original fibroid weight question:

momma’s_girl: wondering how much a softball sized tumor would weigh… any ideas?

So, I set out to search for an answer. From a couple of my responses:

EclecticGeek: Heard fibroids can weigh several pounds but couldn’t find anything that related fibroid weight to approximate size. Started camping out at Google Scholar and PubMed typing in keywords to search (fibroid weight, weight of fibroids, fibroid weight calculation, etc.). I think part of the problem is the shape. Fibroids aren’t perfect spheres so you can’t use some standard formula. Also, I can’t find a consensus on the composition. I’m sure the percentage of whatever is in there varies also compounding the problem.

I was running out of ideas at this point. Fortunately, a contributor provided a spark to jump start my thought processes again. Yay! From the geeky fibroid weight comment:

fibroid free: Volume (V) = LxWxH ok then Mass=Vp (vol x density) ok but how do I get the density?? Then I searched some clinical abstracts and I did find a couple of abstracts listing average weight in surgery comparisons….this is fuzzy science from a Microbiologist/Biochemist so dont kill the messger… it was noted that an 9 cmx 3 cm ‘broid was listed on average as 350-400 grams. Ok so 1000grams = 2.205 lbs or 1 g = 0.002205 pounds (lbs) sooo….. 500g = 1.1 ilb; 350 g= 0.77 lbs and 400 g = 0.88 lbs

Ahhh. Yes, it’s becoming clearer. Hang with me for the last little bit. My “geek-like” response:

EclecticGeek: When I started reading what you said about volume, it clicked. Density is a problem but also shape. Women are getting different dimensions for the fibroids. Some get three (i.e. 7cm x 8cm x 9cm) and can use the formula you provided. More rectangular I guess(?). Some get only one (i.e 6cm) and would need the formula for a sphere (hence pi). For two dimensions (i.e. 9cm x 3cm), maybe use a cylinder calculation(?) that also requires pi.

Now, here is some review material, a few volume equations, and an online calculator. (Did I just sound like a teacher?)

Mass

Density

Sphere

Cylinder

Rectangular Prism

Volume

Volume of Common Solids

Online Volume Calculator

Rectangular Prism: V = l x w x h [i.e. 7cm x 5cm x 2cm = 70cm³]
Cylinder: V = ∏r²h [i.e. dimensions 9, 3: (3.14)(1.5cm)²(9cm) = 63.6cm³]
Sphere: V = 4(∏r³)/3 [i.e. dimension 9: 4(3.14)(4.5)³/3 = 381.5cm³]
Density: ρ = m/V (We will worry about density later after we get volumes and can find more mass info.)

Okay. Let’s get this “fibroid weight” party started. Post your thoughts, calculations, corrections, or other info. 😎

——————–

Related Posts:
What are uterine fibroid tumors?
Psst… Where can I find pictures of fibroid tumors?
Can I pass a uterine fibroid?

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286 Responses to “Would somebody tell me how much these dang fibroid tumors weigh?”

  1. leslielandberg Says:

    Okay, just real quick: hysterectomy has profound implications for your health as you age. You need your uterus, so don’t let anyone cut it out for benign tumors. If the surgeon thinks it won’t have a positive outcome, that surgeon’s skills are inadequate. If your tumors are large, you need a specialist who likes to save women from hysterectomies and enjoys the challenge. This is a boutique operation. You will need to cast a wide net. As for weigt, my myomas were total 65cm! The third largest ever removed in my surgeon’s career. They weighed 1.3 lbs. that is low density, indeed! They were the size of a pummello, roughly a small full-term fetus. Muffin top is caused by prolapsed uterus and weakened abdominals. Daily massage will restore the function and health of these ligaments and reposition your utuerus post-surgically, allowing your stomach to become flat again. Check out Mayan abdominal massage.

    • myohmy Says:

      Are there any good reasons to have your uterus removed?

      • leslielandberg Says:

        Yeah, there are. Cancer comes to mind. Approximately only about 5% of all hysterectomies performed in the U.S. are medically necessary. Some people with fibroids unfortunately experience very heavy uncontrolled bleeding that is life threatening. Removal of the uterus in this instance seems justified to me, as well.

  2. Kim Says:

    Mine was a kilo’ 2.2 lbs and the size of a cantaloupe. So glad to have it out!

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