NEOPLASTIC DISORDERS IN PREGNANCY Flashcards
incidence of Neoplastic Disorders Pregnancy
1 per 1000 pregnancies
- significant Fetal exposure
- the amount depends on the dose, tumor location, and field size
- adverse fetal malformation , intellectual disability, growth restriction, sterility
Radiation Therapy
malformations (0.1 -0.2 Gy)
Weeks 2-8
fetal CNS
Weeks 8-25
less susceptible
After week 25
-Improves long term maternal outcomes
-
CHemotherapy
Fetal effect of chemotherapy
-malformations, intellectual disability, risk for future childhood malignancies
Hold chemotherapy 3 weeks before delivery
-pancytopenia, neutropenia
- Tumors infrequently metastasize to the Placenta
- Malignant melanoma, Leukemia, Lymphoma and Breast cancer
Placental metastases
- Overgrowth of endocervical stroma, lined by epithelium
- Benign, can bleed
- Pap smear; AGUS
Cervix – Endocervical Polyp
- no screening until the age of 21 ;
- Cytology alone every 3 years for 21-29 years
- cytology alone every 3 years for older than 30 HPP
Cervix: Epithelial Neoplasia
-prevalence in pregnant women with Human papilloma virus 16 and 18
15%
-Incidence same as non-pregnant
ABNORMAL CYTOLOGY
-Cytologic abnormality
colposcopy
-Lesions suspicious of ca
cervical punch biopsy
-re-evaluate Post partum
CIN 1-
-if (-) invasive disease, defer re-evaluation until 6 weeks post partum
CIN 2 or 3
- abnormality in women aged 25+ years
- repeat pap in 1 year; colposcopy if current pap is 2nd
NILM/HPV POSITIVE
(+) invasive lesion detected
-avoided during pregnancy
CERVICAL CONIZATION
CIN prior to pregnancy
-cervical stenosis, preterm birth, cervical insufficiency
-diagnosis of invasive cervical ca
-biopsy, colposcopy, removal of mass lesion
- pregnancy continuation is safe, may allow vaginal delivery, definitive therapy is at 6 weeks postpartum
Stage 1A1
- pregnancy can be continued until the fetus reaches lung maturity
Invasive CA
-rad hys + pelvic lypmphadenectomy
Stage I to Iia
- Stage 1B1 1B2
- Can be done before 20 weeks aog
- Delivery is done through Classical CS
Radical Trachelectomy
- risk abortion, preterm birth
- survival outcomes for pregnant are similar to non-pregnant women
Late stage CA
- Benign smooth muscle tumor
- Incidence: 2%
- Subserous, submucous intramural, cervical, broad ligament
- Grow, regress or remain unchanged during pregnancy
- DX: sonography
LEIOMYOMA
-complications in pregnancy
-Preterm delivery, malpresentation, obstructed labor, PPH, placental abruption, fetal IUGR
-Endometriosis after delivery
episiotomy, CS scar
- Endometrial CA; rarely seen in pregnancy
- Develops age 40
ENDOMETRIAL LESIONS
-no need to remove or survey
<5cm
-surgical removal is reasonable
> 10cm
-USG with DOPPLER
5-10cm
- From leutenized stromal cells
- May cause inc. testosterone -> virilizing
- Solid tumor
- No intervention unless with complications
- Spontaneously regress postpartum
Pregnancy luteoma
- First trimester
- Leutenization of follicular theca layer
- Assoc with high Bhcg
HYPERREACTION LUTEINALIS
- 75% detected during pregnancy is early stage
- -management similar to non-pregnant women
OVARIAN CA
- Most frequent ca found in gravidas
- Found at an advanced stage in pregnancy
- Postponed childbearing increased the risk or pregnancy-associated breast ca
Breast Cancer
- Palpable nodules in 47%
- 10% malignant
- USG, TSH , FT4
THYROID CA
-contraindicated in pregnancy _ fetal hypothyroidism
RADIOIODINE
Primary TX
thyroidectomy (2nd trimester)
- derived from B cells
- common in pregnancy
Hodgkin’s disease
-staging in Hodgkin’s disease
chest x-ray, Bone marrow Biopsy, abdominal imaging
- Infrequent during pregnancy
- 10% coexist with HIV
- pregnancy termination + chemo for very early disease
- After 1st trimester: chemotherapy
NON Hodgkin’s Lymphoma
-Causes marked peripheral WBC count abnormalities
LEUKEMIA
Definitive Dx
-bone marrow biopsy
TX
-chemo+ stem cell transplant
- Originate from a pre-existent nevus
- Pigmented lesions that show changes in contour, elevation
- Most frequent malignancy complicating pregnancy
MELANOMA
Treatment for melanoma
-wide local excision + LND
-Increased incidence in pregnancy because of delayed childbearing
COLON and RECTAL CA
colorectal level of ca arise from the rectum
-80%
DX of Colon and Rectal CA
DRE, FOBT, colonoscopy, sigmoidoscopy