48.2mm thick?!?

Anyone know how thick the endometrium can get? I just read the report for my TV u/s and it says 48.2 mm stripe. Is this possible or maybe a typo? I have an appointment tomorrow. Schedules for a hysterectomy next week for 6 month uterus with large fibroids but was not supposed to have ovaries removed. Now I see this result and it's saying they ARE removing ovaries. Anyway, I should have answers tomorrow hopefully but I am low key freaking out and just kind of wanted to talk to someone. Hoping it was an error on the report.