Thank you so much for writing in, . Admittedly, I had to do my own bit of research on endo being found in this particular spot of the body. From my understanding, it's on the rarer side and incredibly painful. My heart is going out to anyone experiencing endo in that region of the body. If I may ask, have you been diagnosed with endo in your psoas muscle? I wanted to also let you know that while I can't offer much in terms of information, I am also genuinely curious about this now and we'll be posting it to our facebook page (https://www.facebook.com/EndometriosisDotNet) tomorrow to see if anyone over there has experience with this that they can offer you as well. Aside from that, how are you feeling today? 💛 Kayleigh, Endometriosis.net team