Includes organs that are bilateral as a single primary (e.g. bilateral retinoblastoma (M9510/3, C69.2), (M9511/3, C69.2), (M9512/3, C69.2), (C69.6, C48.0), bilateral Wilms tumours (C64.9, M8960/3)) Note: Bilateral cancers are very rare.
It is unknown whether, for a paired organ the origin of the cancer was on the left or right side of the body.
This information should be obtained from the patient's pathology report, the patient's medical record, or the patient's medical practitioner/nursing staff.
Source and reference attributes
World Health Organization
Percy C, Van Holten V, Muir C (eds). International Classification of Diseases for Oncology, 2nd edition. Geneva: WHO, 1990