There are no other unified ways of classifying uterine fibroids except by anatomical location and configuration (in case of pedunculated type) but sonographers sometimes use a variety of terms to describe the nature of fibroids. For instace one could describe a fibroid as degenerating, calcified, huge, small etc.

In  addition  to  the  contribution  by  the  distinguished  researcher  above,  I  would  like  to  add  that  the  uterine  segment  the myoma  is  located  is  needful. For  example  posterior, mid-segment; anterior  lower-segment; fundal, etc.

The  most  important  thing  in  my  understanding, is  for  the  physician  to  know  the  location,  the  size  and  the   physiological  state  of  the  fibroid. If  the  traditional  classification  can  resolve  that,  so  be  it.

Apart from the location and whether it is degenerating or not, I do not thick there is another classification

A document about myomas and myometrial assessment is going to be shortly published in the White Journal (UOG).

BW Francesco 

The most common classification of uterine fibroids is the FIGO classification system,  (Munro MG, Critchley HOD, Fraser IS; FIGO Menstrual Disorders Committee. The two FIGO systems for normal and abnormal uterine bleeding symptoms and classification of causes of abnormal uterine bleeding in the reproductive years: 2018 revisions. Int J Gynaecol Obstet. 2018 Dec;143(3):393-408. doi: 10.1002/ijgo.12666)

This classification adopted the popular Wamsteker/ ESH classification of submucosal myomas (FIGO Typ 0-2) and extended it to intramural, subserosal and other myomas (Types 3-8).

In short, type 0 – pedunculated intra-cavitary, type 1 and 2: submucous myomas with < 50% and > 50% intramural involvement, respectively.

Type 3 momas are intramural myomas with contact to endometrium, type 4 - intramural-only myomas, type 5 and 6 - subserous myomas with different intramural involvement (> 50% and < 50%, respectively); Type 7 are pedunculated subserous myomas, and type 8 are “ectopic” or “other” myomas, e.g. cervical or parasitic myomas.

The most recent (2018) version of this classification is freely accessibly under:

https://obgyn.onlinelibrary.wiley.com/doi/epdf/10.1002/ijgo.12666

An interesting approach (“fibroid score”) in relation to the subsequent uterus reconstruction (reconstruction level 1-4) was proposed by Juhasz-Böss et al. (Two novel classification systems for uterine fibroids and subsequent uterine reconstruction after myomectomy. Arch Gynecol Obstet. 2017;295(3):675-680. doi: 10.1007/s00404-016-4268-6)

Uteromap is a standardized technique of measurement uterine conditions. By using it we have a table of data (about uterus and uterine lesions, as well), that can be used to reconstruct the situation, planing surgery, data collection for researches, etc. Paper about it (first in Hungarian) has been accepted for publication.