Cervical Carcinoma





KEY FACTS


Imaging





  • Soft tissue mass in cervix: Hypoechoic or isoechoic ± necrosis



  • Hydro- or hematometra from cervical obstruction



  • Mass extending into upper vagina



  • MR is best modality for local staging and planning of radiation therapy




    • Tumor: Intermediate- to high-signal mass replacing dark cervical stroma on T2-weighted sequences



    • Accuracy superior to FIGO staging for size, parametrial extension, lymph nodes



    • Parametrial invasion: Accuracy: 88-97%, specificity: 93%, negative predictive value: 94-100%




  • PET/CT best modality for overall staging: Nodal disease, liver, bone, and lung metastases



  • Revised FIGO staging uses information from CT or MR; cystoscopy and sigmoidoscopy not mandatory



  • Invasion of posterior bladder wall, anterior rectal wall, ureters




    • Hydronephrosis implies stage IIIB disease




  • Enlarged lymph nodes



  • Abundant internal color flow on color Doppler



  • 3D US may be used to assess tumor volume before/after therapy



  • Ultrasound may be used to guide placement of radiotherapy instruments



Top Differential Diagnoses





  • Cervical fibroid



  • Cervical polyp



  • Endometrial cancer invading cervix



  • Adenoma malignum/minimal deviation adenocarcinoma



  • Rarer cervical tumors: Lymphoma, neuroendocrine/small cell carcinoma



Pathology





  • ~ 80-90% are squamous carcinoma



  • Arise at squamocolumnar junction from precursor lesions




    • Cervical intraepithelial neoplasia grades I-III




  • Stage I: Confined to cervix



  • Stage II: Beyond uterus but not to pelvic sidewall or lower 1/3 of vagina



  • Stage III




    • IIIA: Lower 1/3 of vagina



    • IIIB: Pelvic side wall (within 3 mm of obturator internus, levator ani or pyriformis muscles, or iliac vessels) or hydronephrosis/nonfunctioning kidney




  • Stage IV: Bladder/rectal involvement or distant metastases (lung, liver, bones)



  • Presence of pelvic or paraaortic lymphadenopathy alters prognosis but not FIGO stage



Clinical Issues





  • Abnormal bleeding, pain, or discharge



  • Detected by screening cytology from Pap smear




    • ± testing for high-risk HPV




  • 3rd most common gynecologic malignancy in USA and most common gynecologic malignancy worldwide



  • Risk factors: HPV infection most important, early-onset sexual activity, multiple partners, smoking, immunosuppression, HIV infection



Scanning Tips





  • Look for disruption of normal cervical morphology




    • And for abnormal color flow








Sagittal transvaginal ultrasound shows a bulky soft tissue mass in the cervix , proven to be squamous cell carcinoma. The body of the uterus was unremarkable.








Parasagittal transvaginal power Doppler ultrasound shows abundant vascularity within the anterior portion of the cervical carcinoma.








Longitudinal transvaginal ultrasound demonstrates a large cervical carcinoma . Local staging cannot be determined. There is no hematometra .








Graphic shows locally invasive cervical carcinoma , extending onto the right parametrium and growing along ligaments . Bilateral ovaries are not usually involved.

Nov 10, 2024 | Posted by in ULTRASONOGRAPHY | Comments Off on Cervical Carcinoma

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