| OHS | obesity hypoventilation syndrome; occipital Horn syndrome; occupational health service; ocular histo... |
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| OHSS | ovarian hyperstimulation syndrome |
| OPSA | ovarian papillary serous adenocarcinoma |
| OSA | obstructive sleep apnea; Office of Services to the Aging; Optical Society of America; ovarian sectio... |
| OTR | Ovarian Tumor Registry; Occupational Therapist, Registered |
| ovarian tumour | <gynaecology, oncology> A malignant tumour of the ovary is the leading cause of death from gynaecologic malignancies. Often diagnosed in later stages, symptoms include abdominal pain, increasing abdominal girth and abnormal uterine bleeding. Birth control pill use is thought to reduce the risk of ovarian cancer. (05 Jan 1998) |
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| ovarian tumours | <radiology> Before age 45 most likely to be 98% benign, 2/3 of cancers in ages 40 - 65 yrs see also: ovarian stromal tumours (12 Dec 1998) |
| ovarian varicocele | A varicose condition of the pampiniform plexus in the broad ligament of the uterus. Synonym: tubo-ovarian varicocele, utero-ovarian varicocele. (05 Mar 2000) |
| ovarian veins | See: right ovarian vein, left ovarian vein. (05 Mar 2000) |
| ovarian vein syndrome | <syndrome> Ureteral obstruction due to compression by enlarged ovarian vein, usually right side and during pregnancy. (05 Mar 2000) |
| ovarian wedge resection | <gynaecology, procedure> The surgical removal of a portion of a polycystic ovary to induce ovulation. (05 Jan 1998) |
| teratoma, ovarian | Tumour that develops from a totipotential germ cell (a primary oocyte) retained within the egg sac (ovary). Being totipotential, that cell can give rise to all orders of cells necessary to form mature tissues and often recognizable structures such as hair, bone and sebaceous (oily) material, neural tissue and teeth. These tumours may occur at any age but the prime age of detection is in the childbearing years. The average age is 30. Up to 15% of women with ovarian teratomas have them in both ovaries. The tumours can range in size from a centimeter (less than a half inch) up to 45 cm (17 inches) in diameter. They can cause the ovary to twist (torsion) and imperil its blood supply. Although the large majority (about 98%) of ovarian teratomas are benign, the remaining fraction (about 2%) becomes malignant. The larger the ovarian teratoma, the greater the risk of rupture with spillage of the greasy contents which can create problems with adhesions, pain etc. Removal is usually the treatment of choice by laparotomy (surgery) or laparoscopy (with a scope). Ovarian teratomas are also called dermoid cysts of the ovary and referred to simply as dermoids. (12 Dec 1998) |
| tubo-ovarian | Relating to the uterine (fallopian) tube and the ovary. (05 Mar 2000) |
| tubo-ovarian abscess | A large abscess involving a uterine tube and an adherent ovary, resulting from extension of purulent inflammation of the tube. (05 Mar 2000) |
| tubo-ovarian pregnancy | Development of the ovum at the fimbriated extremity of the fallopian and involving the ovary. (05 Mar 2000) |
| tubo-ovarian varicocele | A varicose condition of the pampiniform plexus in the broad ligament of the uterus. Synonym: tubo-ovarian varicocele, utero-ovarian varicocele. (05 Mar 2000) |
| ureteric branches of the ovarian artery | <anatomy, artery> Branch of ovarian artery arising as it is crossed by the ureter in the female supplying mid portion of ureter. Synonym: rami ureterici arteriae ovaricae. (05 Mar 2000) |
| utero-ovarian | Relating to the uterus and an ovary. (05 Mar 2000) |
| utero-ovarian varicocele | A varicose condition of the pampiniform plexus in the broad ligament of the uterus. Synonym: tubo-ovarian varicocele, utero-ovarian varicocele. (05 Mar 2000) |
| follicular ovarian cells | Cell's of an ovarian follicle that surround the developing ovum; they form the stratum granulosum ovarii and cumulus oophorus. (05 Mar 2000) |