Table 1 Royal Marsden Hospital staging of testicular cancer

I

No evidence of metastasis

  IM

Rising concentrations of serum markers with no other evidence of metastasis

II

Abdominal node metastases

  A

<2 cm diameter

  B

2 to 5 cm diameter

  C

>5 cm diameter

III

Supra-diaphragmatic nodal metastasis

  M

Mediastinal

  N

Supraclavicular, cervical or axillary

  O

No abdominal node metastases

  ABC

Node sizes as for definition in stage II

IV

Extra-lymphatic metastases

Lung

  L1

<3 metastases

  L2

≥3 metastases, <2 cm diameter

  L3

≥3 metastases, one or more of which is >2 cm diameter