Audio-Digest Foundation: obstetrics-gynecology

Main Written Summaries Listing | Obstetrics-gynecology: 2008 Listings
Audio-Digest FoundationObstetrics/Gynecology


Volume 55, Issue 19
October 7, 2008

The following is an abstracted summary, not a verbatim transcript, of the lectures/discussions on this audio program. If, after reviewing this written summary, you would like to hear the contents and/or earn CME/CE credit, simply visit the Audio-Digest Foundation website

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ISSUES IN REPRODUCTIVE HEALTH

Highlights from New Concepts in Obstetrics and Gynecology, presented by the University of Miami Miller School of Medicine, Department of Obstetrics and Gynecology




Educational Objectives

The goal of this program is to improve management of patients with endometrial cancer and infertility. After hearing and assimilating this program, the clinician will be better able to:
Identify women at risk for endometrial cancer
Make the diagnosis of endometrial cancer using the appropriate diagnostic modality
Discuss the management of endometrial cancer
Implement a basic work-up for infertility and manage patients experiencing infertility
Determine which patients need to be referred to a reproductive endocrinologist.

Faculty Disclosure

In adherence to ACCME Standards for Commercial Support, Audio-Digest requires all faculty and members of the planning committee to disclose relevant financial relationships within the past 12 months that might create any personal conflicts of interest. Any identified conflicts were resolved to ensure that this educational activity promotes quality in health care and not a proprietary business or commercial interest. For this program, the faculty and planning committee reported nothing to disclose.

Acknowledgments


Drs. Lucci and Shapiro were recorded at New Concepts in Obstetrics and Gynecology, sponsored by the University of Miami Miller School of Medicine, Department of Obstetrics and Gynecology, andheld on February 21-23, 2008, in Miami, FL. The Audio-Digest Foundation thanks the speakers and the University of Miami Miller School of Medicine for their cooperation in the production of this program.


ENDOMETRIAL CANCER: DIAGNOSIS AND MANAGEMENT—Joseph A. Lucci III, MD, Professor and Director, Division of Gynecologic Oncology, University of Miami Miller School of Medicine, Miami, FL
General considerations: incidence and death rates remain stable; significant disparity in black women; 75% of patients present with stage I or II disease; 25% present with stage III or IV; survival rates similar to those for ovarian cancer
Risk factors: obesity (rate of endometrial cancer increasing as obesity increases); unopposed estrogen; complex atypical hyperplasia; late menopause; nulliparity; diabetes mellitus (likely linked to variety of mechanisms, ie, estrogen and fat metabolism); hypertension; tamoxifen (7-fold increased risk); decreased risk with oral contraceptives and smoking; stimulation of endometrium due to unopposed estrogen—increased endogenous synthesis (eg, granulosa cell tumors, obesity); decreased estrogen metabolism (ie, impaired hepatic function); inappropriate or incomplete hormone replacement therapy
Diagnostic considerations: consider diagnosis in postmenopausal woman having bleeding or spotting; thin endometrial strip seen on transvaginal ultrasonography (US) and endometrial cells on Papanicolaou (Pap) test warrant further evaluation; lighter and less frequent menstrual periods not universal in perimenopausal women; gradual anovulation can lead to complex endometrial hyperplasia and cancer; 25% of patients diagnosed before menopause ; 5% (and increasing) diagnosed at <40 yr of age; always consider endometrial sampling for patient not responding to appropriate hormone therapy for abnormal bleeding; symptoms—unexplained vaginal spotting or bleeding; persistent vaginal discharge; uterine enlargement; glandular cells or endometrial cells on Pap test (especially in postmenopausal woman); majority of patients symptomatic at time of presentation, but 10% asymptomatic
Diagnostic evaluation: controversy surrounding impact of diagnostic methods and spread of disease
Endometrial biopsy: generally well tolerated; can be performed in office; may need to perform in operating room if patient has severely stenotic cervix or vagina; endometrial sampling—insert Pipelle to apex; pull out plunger; rotate device 360° to ensure adequate sampling; slowly withdraw device from uterine cavity; inadequate sampling if Pipelle fills before withdrawn from cervical os or suction lost; may require 3 or 4 passes for adequate sampling; subsequent passes better tolerated; 10% false-negative rate associated with improper use of Pipelle; adequate sampling obtained only with proper use of device, regardless of type; transvaginal US—do not use as sole diagnostic method of ruling out endometrial cancer; although risk for cancer low with endometrial stripe <4 mm, it is not zero; with changes in endometrial thickness or fluid in endometrial cavity, consider additional diagnostic modality; hysteroscopy and dilation and curettage (D and C)—associated with increased risk for malignant cells in peritoneal cytologic specimen; continuous debate about value of cytology in endometrial cancer; peritoneal biopsy and omental biopsy more prognostic for metastasis than simple cytology; speaker performs hys-teroscopy and D and C when unable to obtain adequate sampling in office; etiology of postmenopausal bleeding varied (endometrial cancer third most common cause); study evaluating atypical endometrial hyperplasia—community diagnosis of atypical endometrial hyperplasia; endometrial biopsies sent for expert pathology review; poor correlation with diagnosis among pathologists, even among experts; all patients underwent hysterectomy within 6 wk; 43% had endometrial cancer in specimen at time of hysterectomy; reliance on quoted risks for cancer discouraged; important to know whether evidence of atypical endometrial hyperplasia present; consider diagnosis of endometrial cancer until proven otherwise
Preserving fertility: endometrial biopsy and D and C subject to same types of interpretation errors, whether endometrium benign or malignant; easy to lose orientation relative to myometrium; evidence of invasion not visible; magnetic resonance imaging (MRI) and cancer antigen (CA-125) helpful in identifying myometrial invasion; both tests recommended before initiating conservative management; CA-125—80% of patients with elevated CA-125 have metastatic disease; results of CA-125 vary significantly with menstrual cycle; hormone therapy—various therapies reported; data show mean time to response 3 or 4 mo; pregnancy recommended as soon as clearance of disease confirmed; relapse can occur in 40 mo; source of abnormality likely to be persistent; histologic types— endometrioid adenocarcinoma accounts for majority of endometrial cancer cases; papillary serous carcinoma; clear cell and undifferentiated carcinoma require aggressive treatment (not necessarily associated with estrogen metabolism)
Surgical management: preferred method of treatment when fertility not issue; data show 12% to 25% of patients have higher stage disease on restaging; tumor grade sensitive indicator of tumor spread; 50% of patients with grade 3 lesions have deep myometrial invasion; bilateral pelvic and para-aortic lymph nodes required for adequate lymphadenectomy; 50% of nodes microscopically positive; surgical impression of involved nodes invalid, even in most experienced hands; surgical technique—midline vertical or transverse incision; majority of speaker’s patients undergo laparoscopic-assisted vaginal hysterectomy (LAVH) and lymphadenectomy with omental biopsy; less blood loss, shorter recovery time, and shortened hospitalization; omentectomy—speaker does not perform full omentectomy; large piece of omentum excised and divided into 5 specimens for pathology review; 8% of patients have metastatic disease in omentum; speaker performs appendectomy in majority of patients (provides additional biopsy site, prevents risk for appendicitis in irradiation field)
Uterine papillary serous carcinoma and clear cell carcinoma: highly aggressive with poor prognosis; require surgical debulking; patient considered high-risk; treatment similar to that for ovarian cancer; CA-125 good marker
Obese and medically compromised patient: transvaginal approach or LAVH appropriate for patients with uterine fundal diameter <8 cm; not recommended if larger because of morcellation risk; data show survival of patients undergoing appropriate adjuvant therapy close to that for patients who undergo full surgical staging (treatment can be compromised when surgical management not adequate because of patient’s condition)
Hormone therapy: consider for patients at high risk for recurrence (ie, advanced-stage disease); vaginal brachytherapy and chemotherapy; standard therapy—combination of doxorubicin (formerly known as adriamycin) with cisplatin; speaker uses carboplatin (Paraplatin) and paclitaxel (eg, Taxol) or docetaxel (Taxotere)
Risk factors for recurrence: grades 2 or 3 histology; lymphovascular space invasion; greater than one-third myometrial invasion; age of patient; high-intermediate risk—patient >70 yr of age with 1 risk factors, any patient >50 yr of age with 2 risk factors, or any patient with 3 risk factors; vaginal brachytherapy and chemotherapy treatment options; pelvic external beam irradiation treatment option for patients not having lymphadenectomy; patients with estrogen-related tumors—response rate with progestational therapy may be similar to that of certain chemotherapy agents; may require addition of aromatase inhibitors
INFERTILITY: MANAGEMENT FOR THE OB/GYN PRACTITIONER—Arthur Shapiro, MD, Professor of Clinical Obstetrics and Gynecology, Division of Reproductive Endocrinology, University of Miami Miller School of Medicine
General considerations: definition—inability of couples of reproductive age to establish pregnancy in 1 yr of unprotected sexual intercourse; prevalence—1 in 4 women experience infertility during reproductive years; female cause accounts for 50%, male cause 35%, and combination 25%; 6 million infertile couples; 50% of couples never receive treatment; with appropriate treatment, 2 of 3 couples succeed; decreasing follicle number with age—number of follicles fixed early in life; primordial germ cells arrive in gonadal ridge by seventh week of gestation; total germ cell number peaks at 20-wk gestation (6-7 million); declines to 1 million at birth; <500,000 by puberty; gradual decline in follicle number by process of atresia; follicles become resistant to stimulation in perimenopause; 1 in 3 women miscarry in 40- to 44-yr age group; increased risk for chromosomal abnormalities with increasing age (may account for miscarriage)
Indications for early fertility evaluation: women >35 yr of age; abnormal cycles (ie, short or long cycles); suspected or documented pelvic inflammatory disease (PID); endometriosis; male factor; stress—evidence supports effect of stress on fertility; can interfere with in vitro fertilization (IVF); providing patient with information and ovulation- prediction home testing may improve and reduce stress
Evaluation
First examination: patient history and physical examination; basic fertility evaluation similar to prenatal evaluation; HIV test recommended; counsel about factors influencing fertility (eg, body mass index [BMI], smoking, excessive use of alcohol and caffeine-containing products, herbal medications, recreational drugs); discourage use of vaginal lubricants (acidic in already acidic environment); folate supplementation recommended (data support reduction in congenital abnormalities and prematurity)
Ovulatory status: establish ovulatory status; luteinizing hormone (LH) surge test; midluteal serum progesterone; US
Evaluation of hormone levels: baseline gonadotropins (ie, follicle-stimulating hormone [FSH], prolactins); not necessary; fasting and 2-hr glucose with high BMI and family history of diabetes; androgens (ie, testosterone)
Ovarian reserve: day 3 levels of FSH and estradiol; clomiphene challenge test; progesterone challenge test obsolete; anti-Mullerian hormone (low result serves as guide for referral to infertility specialist)
Uterine factors: US including sonohysterography; hystero-salpingography (HSG) widely used for uterine and tubal evaluation; hysteroscopy gold standard for intrauterine evaluation
Tubal factors: same evaluation as uterus; Novy catheters require reproductive endocrinology infertility specialist; PID and sexually transmitted diseases can be asymptomatic; serologic Chlamydia IgG serology may provide clue; speaker recommends doxycycline 100 mg bid for 4 to 6 doses as prophylaxis before HSG; hydrosalpinx— poor results with neosalpingostomy (pregnancy rate 10%); high rate of ectopic pregnancy; removal of fallopian tube often recommended
Semen analysis: 1 to 3 days of abstinence recommended before testing; concentration and volume easily measured; motility should be 50% or more; no evidence of obstruction on fructose measurement; fructose level run only with suspicion of azoospermia; morphology 30% considered normal using World Health Organization (WHO) criteria, >13% if using “strict” criteria; IVF success rates 4% to 13%; sperm DNA fragmentation and decondensation analysis— DNA of sperm decondenses when fertilization occurs; <80% considered abnormal; defragmentation tests for level of DNA damage; >15% considered abnormal; helpful in identifying whether patient candidate for intrauterine insemination (IUI), IVF, or intracytoplasmic sperm injection (ICSI); Y chromosome partial deletions— generally done if patient oligospermic or azoospermic; semen analysis should be repeated at least once (sperm cycle plus or minus 72 days, wait at least that interval to repeat test); referral to urologist—varicocele; antibiotic therapy initiated with presence of white blood cells in semen (both partners treated); endocrine work-up; testicular biopsy; sperm extracted from testicle for ICSI if male azoospermic; frequency of coitus—optimum number of motile sperm obtained with 3 to 4 ejaculations per week; coital frequency of twice per week adequate for conception in normal couples; abstinence >10 days decreases sperm motility and fertility
Tests with uncertain diagnoses: endometrial biopsy—may be appropriate for those with recurrent miscarriage; rate of luteal phase deficiency shown to be same in fertile and infertile populations; postcoital test—no published standards; poor predictive value; female antisperm antibodies—no predictive value of serum antibody titers
Myomas: submucosal fibroids—lower probability of pregnancy and increase risk for miscarriage; remove fibroid if invading uterine cavity by >50%; subserosal fibroids—no need to remove; intramural fibroids—remove if 6 cm; surgery—myomectomy (especially for intramural fibroids) associated with postoperative adhesions; desire for pregnancy no longer contraindication to MRI-guided focused US surgery; uterine artery embolization not recommended for women who wish to preserve fertility; consider trial of IVF for woman with small fibroids
Endometriosis: ovarian endometrioma—remove if 4 cm; IVF pregnancy rates lower with stage III and IV; refer for IVF before considering other therapies; some evidence of improved fertility after laparoscopy and medications in women with stage I or II endometriosis; uterine septum—high spontaneous abortion rate; miscarriage rate reduced to normal after hysteroscopic resection
Treatment options
Ovulation induction: reserved for anovulatory patients; no tubal obstruction or male factor present; success rates 15% to 20% per cycle; lack of estrogen demonstrated if patient who is not having regular cycles does not have withdrawal bleeding after progesterone therapy; clomiphene not option; consider consultation with reproductive endocrinologist or use of recombinant FSH
Therapy options: gonadotropin (recombinant FSH); natural intercourse; intrauterine insemination (IUI); clomiphene therapy—day 3 to 5; give for 5 to 7 days; start ovulation prediction testing on day 13 (most patients with polycystic ovary syndrome [PCOS] do not ovulate on own, but some may); transvaginal pelvic US on day 14 or 15 should reveal 14- or 15-mm follicle (20 to 28 mm at maturity); IUI usually performed 36 hr after human chorionic gonadotropin (or next day with positive predictive test); luteal progesterone 1 wk after ovulation should measure 15 ng/mL; increase clomiphene only if response poor
Aromatase inhibitors: not approved by Food and Drug Administration (FDA); letrozole given for 5 days causes rise in gonadotropins; substitute for clomiphene yet to be shown
Failure to conceive: rethink situation; consider laparoscopy before initiating treatment with gonadotropin or refer for IVF
Unexplained infertility: refer for IVF; 20% success rate in all age groups; pregnancy rate 45% if patients <35 yr of age; gonadotropins and IUI second option

Suggested Reading

American College of Obstetricians and Gynecologists. ACOG practice bulletin. Management of infertility caused by ovulatory dysfunction. Number 34, February 2002. American College of Obstetricians and Gynecologists. Int J Gynaecol Obstet 77(2):177, 2002; Baekelandt MM et al: Endometrial carcinoma: ESMO clinical recommendations for diagnosis, treatment and follow-up. Ann Oncol Suppl 2ii19, 2008; DeHondt A et al: Endometriosis and subfertility treatment: a review. Minerva Ginecol 57(3):257, 2005; Practice Committee of the American Society for Reproductive Medicine: Aging and infertility in women. Fertil Steril 86(5 Suppl):S248, 2006; Practice Committee of the American Society for Reproductive Medicine: Effectiveness and treatment for unexplained infertility. Fertil Steril 82 Suppl 1:S160, 2004; Practice Committee of the American Society for Reproductive Medicine: 82 Suppl 1:S90, 2004; Shutter J et al: Prevalence of underlying adenocarcinoma in women with atypical endometrial hyperplasia. Int J Gynecol Pathol 24(4):313, 2005.

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