Type: Rare cancer

Hairy cell leukemia

Indolent B-cell leukemia with characteristic hairy lymphocytes and pancytopenia.

Langerhans cell histiocytosis

Clonal proliferation of Langerhans-type cells with single- or multi-system disease.

Mesothelioma

Aggressive malignancy of mesothelial lining, strongly linked to asbestos exposure.

Neuroblastoma

Embryonal tumor of the sympathetic nervous system, commonest extracranial solid tumor of childhood.

Osteosarcoma

Commonest primary bone malignancy, peaking in adolescence.

Retinoblastoma

Commonest intraocular childhood cancer arising from the retina.

Rhabdomyosarcoma

Commonest soft-tissue sarcoma of childhood arising from skeletal-muscle precursors.

Wilms tumor

Commonest childhood kidney cancer.