Apoptosis is the biological process by which cells in tissues undergo progr
ammed death, This process is morphologically identifiable and characterised
by light and electron microscopy, However, the biological mechanisms under
lying this process, as yet, are poorly understood and in need of elucidatio
n, As apoptotic tumour cells can be identified and counted by light microsc
opy, there has been interest in the application of the enumeration of apopt
osis in malignant growths as a putative prognostic marker, This review outl
ines the rationale for and discusses the relevance of using such an approac
h in clinical practice.