Unexpected uterine smooth muscle tumor of uncertain malignant potential and sarcoma: A single center cohort study in South Korea.

Objective: To evaluate the risk of encountering unexpected uterine smooth muscle tumors of uncertain malignant potential (STUMPs) or sarcomas during surgical treatment of mesenchymal tumors of the uterus using morcellation.

Material And Methods: Data were collected retrospectively from subjects who were pathologically diagnosed with uterine leiomyoma or its variants, STUMP or other premalignant mesenchymal tumors of uterus, or sarcoma during surgical treatment between July 2014 and June 2017.

Results: A total of 3785 women were investigated; 2824 laparoscopic procedures (74.

Successful in vitro fertilization pregnancy and delivery after a fertility-sparing laparoscopic operation in a patient with a papillary thyroid carcinoma arising from a mature cystic teratoma.

Malignant transformation of ovarian mature cystic teratomas is rare, and papillary thyroid cancer occurs in 0.1%-0.3% of ovarian teratomas that undergo malignant transformation.