Which of the following types of malignancy is least likely to metastasise to the lung?

A) Breast
B) Bone
C) Thyroid
D) Renal
E) Hepatic


The answer is E. The lungs are a common site for secondary tumours, the malignancies which metastasise to the lungs can be remembered using the mnemonic BOMBERS:

Breast
Oesophago/gastric/head - neck (+ colon if liver mets)
Melanoma
Bone - sarcomas
Endocrine - thyroid
Renal and prostate
Sex: ovary, choriocarcinoma and testes