Revise Radiology Breast & OG Flashcards
MRI limitations in ovarian tumours
Less useful than CT to assess for metastatic disease
Complication of large CPAM prenatally
Hydrops fetalis
Bilateral, sharply marginated oval tumours preserving ovarian contours
Krukenberg tumours
Ectopic pregnancy vs corpus luteum cyst
Both ring of fire
Ectopic: RI <0.4 or >0.7, thick echogenic ring, moves away from ovary
Benign microcaclification
Stable for 2 years
O-RADS 3
5-10cm
Homogenous low level internal echos
no solid components or doppler flow
Thick membrane separating 2 gestational sacs
Dizygotic dichorionic diamniotic
MRI contrast in pregnancy
Gd based contrast crosses the placenta membrane and circulates through amniotic fluid
cervical cancer causing hydronephrosis
Suggests pelvic sidewall invasion, T3b
T2 bright multilocular cystic mass in ovary, no solid components
Cystadenoma
Mucinous vs serous cystadenoma of ovaries
Mucinous are larger and more often multiloculated with fewer papillary projections
FDG positive result (adrenal)
Adrenal lesion > liver
Chemical shift MRI for adrenal lesions
> 40% decrease suggests benign (adenoma)
<20% suggests malignancy
Accoustic shadowing suggests (breast)
Malignancy
O-RADS 2
<10cm
Smooth walls
No septations, solid components or doppler
Pre-eclampsia causes
Small placenta
duct extension vs echogenix psuedocapsule
duct extension is malignant and echogennic psuedo capsule is benign
trans wiomen breast screening
transwomen on prolonged hrt have mammograms every three years
Breas cancer commonly associated with pagets
DCIS
homogogenously high t1 and t2 complex mass in ovar
endometriosis
sbowstorm appearance
complete mole
commoest cause of interuterine death
placental pathologies
Gas in heart (sign)
roberts sign
Spalding ign
overlapping cranial bones
Ovarian cyst with distinct echogenic nodule
Mature cystic teratoma
Large, solid high T2 mass with homogenous enhancement, causing precoucious puberty
Granulosa cell tumour
Rim of enhancement on MRI breast
Suggests malignant lesion
Cluster of grapes appearance, echogenic lesion with innumerable cystic spaces filling the uterine cavity
Invasive hydatiform mole
Infiltrative heterogenous mass invading myometrium, post D&C for mole
Gestational choriocarcinoma
Ipsilatetal supraclacivular nodal involvement in breast cancer stage
M1
Complete hydatiform mole Rx
Endometrial suction curettage under US guidance
well defined, oval, anechoic fluid filled structire adjacent to the uterus, incomplete septae
Hydrosalpinx
Negative biopsy but suspicious imaging findings
Repeat biopsy
Urethral diverticula associated with
Skene duct inflammation
Septate vs bicornate uterus
Bicornate demonstrates clear fundal cleft
Commonest appearane of unicornuate uterus
Single uterine horn with rudementary horn which may contain endometrial tissue