Table 1

Numbers and histopathological subdiagnoses for inclusion in BioMEL

Diagnosis	Subgroup	Numbers
Nevus
	Without cytological atypia	100
	With mild atypia	100
	With moderate atypia	100
	With severe atypia	100
Melanoma in situ	Lentigo maligna	100
	In situ (unspecified)	100
Invasive melanoma
	Superficial spreading	100
	Acral lentiginous	50
	Nodular	50
	Lentigo maligna melanoma	100
	Not specified type	100
Metastatic melanoma (site of metastasis)
	Lymph node	100
	Cutaneous	100
	Visceral*	100
	Bone	10

*Visceral include, but are not restricted to, lesions involving the brain, dura, liver, peritoneum, adrenal glands, lungs and pleura.