GTN WHO Prognostic Scoring Calculator

As part of FIGO staging, a prognostic score (or risk) is calculated to determine the optimal treatment course. Below is a WHO prognostic score calculator to aid in clinical decision making for determining whether a patient should be assigned to single agent or multi-agent chemotherapy.

•     

  Age

                   Less than 40                  40 or greater

  The age of the patient

• Pregnancy Type

  mole abortion/miscarriage term

  The type of pregnancy which brought on this GTN

• Months since Preg

  less than 4 4-6 7-12 greater than 12

  The number of months since the index pregnancy

• Pretreatment hCG

  less than 10³ 10³ - 10⁴ 10⁴ - 10⁵ greater than 10⁵

  The beta-hCG prior to chemotherapy

• Tumour Size

  less than 3 cm 3 - 5 cm greater than 5 cm

  The size of the largest tumour on imgaging (including any tumour inside the uterus)

• Number of Metastases

  None 1 - 4 5 - 7 greater than 8

  The size of the largest tumour on imgaging (including any tumour inside the uterus)

• Sites of Metastases

  none or isolated to lung spleen, kidney GI liver, brain

  Select the most advanced (right most) site of metastases identified on imaging. Note, if CT-head imaging is negative but suspicion is high for neurological involvement, consider a CSF analysis for hCG.

• Previous Treatment

  None Single Agent Multi Agent

  Select which treatment has already been attempted.

• WHO Prognostic Score

  -