Unilateral ovarian agenesis: report of three cases and review of the literature

Ovarian absence: a systematic literature review and case series report

Ovarian absence is an uncommon condition that most frequently presents unilaterally. Several etiologies for the condition have been proposed, including torsion, vascular accident, and embryological defect. A systematic review was conducted to describe the clinical presentation of ovarian absence, as well as its associations with other congenital anomalies, through a systematic search of Cochrane Library, ClinicalTrials.gov, Google Scholar, Ovid Embase, Ovid Medline, PubMed, Scopus, and Web of Science. Exclusion criteria included cases with suspicion for Differences of Sex Development, lack of surgically-confirmed ovarian absence, and karyotypes other than 46XX. Our search yielded 12,120 citations, of which 79 studies were included. 10 additional studies were found by citation chasing resulting in a total 113 cases including two unpublished cases presented in this review. Abdominal/pelvic pain (30%) and infertility/subfertility (19%) were the most frequent presentations. Ovarian abnormalities were not noted in 28% of cases with pre-operative ovarian imaging results. Approximately 17% of cases had concomitant uterine abnormalities, while 22% had renal abnormalities. Renal abnormalities were more likely in patients with uterine abnormalities (p < 0.005). Torsion or vascular etiology was the most frequently suspected etiology of ovarian absence (52%), followed by indeterminate (27%) and embryologic etiology (21%). Most cases of ovarian absence are likely attributable to torsion or vascular accidents, despite many references to the condition as "agenesis" in the literature. Imaging may fail to correctly diagnose ovarian absence, and diagnostic laparoscopy may be preferable in many cases as genitourinary anatomy and fertility considerations can be assessed during the procedure. Fertility is likely minimally or not affected in women with unilateral ovarian absence.

Unilateral ovarian agenesis with ipsilateral tubal presence - report of a case

OBJECTIVES

Isolated ovarian agenesis in the absence of Mullerian duct anomalies are rare events which are usually discovered after menarche and incidentally in the context of an intervention for other indications, such as laparoscopy or assisted reproduction techniques.

CASE PRESENTATION

We hereby present a case of unilateral ovarian agenesis in the presence of the ipsilateral fallopian tube.

CONCLUSIONS

Older studies had reported an incidence of true congenital unilateral ovarian agenesis to be 1 in 11,241 females Sivanesaratnam V. Unexplained unilateral absence of ovary and fallopian tube. Eur J Obstet Gynecol Reprod Biol 1986;22:103-5, but this is likely an understatement given the increase of relevant literature in recent years and the frequency of laparoscopy nowadays.

Incidental Finding of Unilateral Ovarian and Fallopian Tube Agenesis During Cesarean Delivery in Patient With Recurrent Pregnancy Loss

Congenital unilateral agenesis of the ovary and fallopian tube is a rare condition that has been previously described in the literature. While this condition is benign, studies have proposed it could be associated with infertility. The purpose of this report is first to highlight a rare incidental finding of unilateral ovarian and fallopian tube agenesis. Secondly, we aim to discuss the various imaging modalities used for the detection of uterine, ovarian, and fallopian tube defects and their shortcomings. Our case describes a 37-year-old G4P0030 woman with an obstetric history of spontaneous abortion and ectopic pregnancy, presenting at 38 weeks gestational age with polyhydramnios. The patient received routine obstetric care with no abnormalities being reported on routine ultrasonography. Elective cesarean section was performed at which time the incidental condition discovery of unilateral agenesis of the right ovary and fallopian tube was made. This case is unique since the incidental diagnosis of unilateral right ovarian and right fallopian tube agenesis occurred during cesarean delivery instead of through imaging. It is important for patient counseling to understand the typical workup and deficiencies in pelvic imaging concerning congenital anomalies

Unilateral tubo-ovarian agenesis with contralateral adnexal torsion in a premenarchal girl

Unilateral adnexal agenesis is a rare entity. Most of these cases are reported in reproductive age group. A case of a 10-year-old premenarchal girl is reported who presented with acute abdominal pain and vomiting. BothUltrasonography (USG) and MRI suggested right ovarian mass with torsion. Laparoscopic evaluation revealed an enlarged right ovary with torsion and contralateral agenesis of uterine tube and left ovary. Detortion of the ovary and an ovarian fixation to the ovarian pedicle was done. This is the first reported case of a premenarchal girl presenting with an acute abdomen due to adnexal torsion along with contralateral tubo-ovarian agenesis.

Unilateral ovarian absence in a Black-headed Squirrel Monkey (Saimiri vanzolinii Ayres, 1985), a threatened neotropical primate species

Ovarian agenesis is an unusual anomaly with traumatic or congenital origin. In the present case report, we describe our findings in a senile S. vanzolinii female. As this neotropical primate species is listed as vulnerable, with limited geographic distribution in the Brazilian Amazonia, ovarian agenesis may be an important finding to be reported.

Unilateral ovarian and fallopian tube agenesis in an infertile patient with a normal uterus

Congenital agenesis of the unilateral adnexa is a condition that has rarely been described in the literature. The current study presents the case of a 26-year-old female who was admitted to the Department of Gynecology at the Women’s Hospital of Zhejiang University (Hangzhou, Zhejiang) for primary infertility. The patient was diagnosed with unilateral ovarian and fallopian tubal agenesis, without malformations of the uterus and urinary tract, during diagnostic laparoscopy and hysteroscopy. A literature review was conducted with the aim of determining the possible causes of these anomalies. However, the etiology of the adnexal anomaly remained unclear, although torsion or congenital defects were the most likely explanation. Therefore, the observations of the present study indicate that contralateral tubal pathologies may contribute to sterility.