Solitary Lung Mass Mnemonic – CASH PLEASE

This mnemonic has been commonly used to recall the differential diagnosis for a solitary lung mass: CASH PLEASe

C – Cancer
A – Abscess
S – Solitary Metastasis
H – Hamartoma

P – Pseudotumor
L – Lymphoma
E – Echinococcus
A – Actinomyces
S – Sequestration

See a case discussion of solitary lung mass here.