Learning objectives
– To review extra-ovarian conditions that resemble ovarian lesions (from peritoneum,
retroperitoneum,pelvic wall,Fallopian tube,
uterus,
urinary and gastrointestinal tract orvessels),
providing a pictorial review of ovarian lesions mimics and common pitfalls;
– To suggest a systematic imaging analyses to preventmisinterpretation of lesions mimicking ovarian pathology.
Background
Introduction
– Large pelvic masses in women may originate from the peritoneum,retroperitoneum,ovaries,
Fallopian tubes,uterus,
cervix,
gastrointestinal tract orbladder.
– To distinguish ovarian from non-ovarian masses is a common imaging dilemma and presents a special diagnostic challenge.
– Diagnosis can be often suggested on the basis of tumour location and anatomic landmarks.
– These landmarks include the organ of origin,
relationship to vasculature,
peritoneal or extraperitoneal involvement and lateral pelvic wall involvement.
Normal Ovary – Anatomy
–Located inovarian fossa / fossa of Waldeyer
–Not covered with...
Findings and procedure details
The first step in analyzing a pelvic tumor is to determine if it is intra or extra-peritoneal.
Moving on to the important distinction between ovarian or non-ovarian tumors,
there are a number of signs that can point us in the right direction.
Conclusion
There is non-ovarian disease which mimic solid and cystic ovarian lesions;
Challenges in adnexal masses imaging include benign and malignant disease with genitourinary,
gastrointestinal,
vascular or lymphatic,
peritoneal or retroperitoneal origin;
The first step in presence of an incidental pelvic mass on adnexal topography,
is to find out if it is ovarian or non-ovarian in origin;
Findings as the ovarian vessels,
"Bridging Vessel" sign,
"Claw" sign or identification of the ipsilateral ovary,
makes it easier to distinguish ovarian from non-ovarian origin.
Personal information
Teresa Dionísio
Department of Radiology
Hospital de Braga
Sete Fontes - São Victor
4710-243 Braga
Portugal
Teresa Margarida Cunha
Department of Radiology
Instituto Português de Oncologia de Lisboa Francisco Gentil
R.
Prof.
Lima Basto
1099-023 Lisboa
Portugal
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