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I
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Tumour confined to uterus
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IA
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≤50 % of myometrium
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Abnormal SI in endometrial cavity or confined to inner half of myometrium
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IB
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>50 % of myometrium
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Extends into the outer half of myometrium
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II
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Cervical stromal invasion, but not extension beyond uterus
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Disruption or focal thinning of cervical stroma
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III
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Local or regional spread
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IIIA
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Serosa of uterus and/or adnexa
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Disruption or irregular uterine contour caused by tumour; ovarian nodular tumour
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IIIB
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Vagina or parametria
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Direct tumour extension of upper vagina or/and parametrial tissues
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IIIC
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Metastases to pelvic and/or paraaortic lymph nodes
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IIIC1
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Pelvic nodes
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Lymph nodes >8 mm in short axis
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IIIC2
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Paraaortic nodes w/wo pelvic nodes
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Lymph nodes >10 mm in short axis
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IV
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Bladder/bowel mucosa; or distant metastases
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IVA
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Bladder/bowel mucosa
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Tumour disrupts bladder or bowel muscle and invades mucosa; not bullous edema
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IVB
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Metastases abdominal and extraabdominal; inguinal lymph nodes
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Tumour deposits at distal sites including peritoneal mets, bladder, bone liver mets, and distal lymph node metastases
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