Neoplasms part 2 Flashcards
Type I endometrial CA
Caused by unopposed estrogen stimulation
Usually endometroid histology
Generally good prognosis- 90% cure stage I
About 70% diagnosed stage I
Type II endometrial CA
Unrelated to estrogen stimulation
Usually nonendometroid histology (clear cell, papillary serous)
Worse prognosis
RFs for endometrial CA
Obesity- extraovarian aromatization of androstenedione to estrone
Granulosa-theca cell ovarian tumors- about 15% have endometrial CA
Chronic anovulatory cycles (Stein-Leventhal syndrome)
Postmenopausal pts treated with unopposed ERT
Long-term tamoxifen
Alcohol intake: 2 or more drinks per day
Obesity and gynocologic CAs
BMI >35 is associated with increased mortality compared with nl wt in ovarian, cervical CA, and endometrial CA
What is the MC tx for endomtrial CA?
TAH with bilateral salpingo-oophorectomy
Endometrial carcinoma screening and prevention
In high risk pts- annual endometrial sampling and TVUS beginning at age 30-35
OCPs- possible chemoprevention
Risk-reducing hysterectomy for atypical endometrial hyperplasia
Endometrial adenocarcinoma
MC, typically postmenopause
Associated with excessive estrogen exposure
Often dx-ed with endometrial hyperplasia
Types of endometrial CA
Adenocarcinoma
Adenosquamous
Clear cell carcinoma
Serous carcinoma
Endometrial CA sx
Postmenopausal bleeding
Dysfunctional uterine bleeding (5% of endo CAs dx-ed
Name the types of endometrial hyperplasia from least risk of progression to CA to highest risk
Simple hyperplasia without atypia Complex hyperplasia without atypia Simple atypical hyperplasia Complex atypical hyperplasia -These pts also have significant risk for concurrent endometrial adenocarcinoma
Genetic risk factors for endometrial CA
Lynch syndrome
Cowden syndrome
-Characteristic benign mucocutaneous hamartomas
-Uterine fibroids-40% of pts
-Increased endometrial, breast, thyroid, colorectal, and renal CAs
Screening and prevention of endometrial CA in pts with genetic RFs
Annual endometrial sampling and TVUS beginning at age 30-35
Risk-reducing hysterectomy
Oral contraceptives for possible chemoprevention
Endometrial CA workup
TVUS to evaluate endometrial lining
Endometrial CA: stage and spread at dx
Majority of uterine adenocarcinomas are dx-ed at early stage:
- Confined to primary site (70%)
- Spread to regional organs and lymph nodes (20%)
- Distant metastases (10%)
Stage IA endometrial CA
Tumor confined to the endometrium
Stage IB endometrial CA
Invasion <1/2 myometrial thickness
Stage IC endometrial CA
Invasion >1/2 the myometrial thickness
Stage IIA endometrial CA
Endocervical glandular involvement only
Stage IIB endometrial CA
Cervical stromal invasion
Stage IIIA endometrial CA
Tumor invades serosa or adnexa, or malignant peritoneal cytology
Stage IIIB endometrial CA
Vaginal and/or parametrial metastasis
Stage IIIC1 endometrial CA
Metastasis to pelvic lymph nodes
Stage IIIC2 endometrial CA
Mets to P.A. nodes with or without pelvic lymph node metastasis
Stage IVA endometrial CA
Invasion of the bladder or bowel