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?)
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. 😎