Lucent/lytic skull lesions (mnemonic)

Two mnemonics to remember the causes of lucent/lytic skull lesions are:

• MEL TORME
• TROMMEL

Mnemonic

MEL TORME 

• M: metastasis
• E: eosinophilic granuloma
• L: lymphoma/Langerhans cell histiocytosis
• T: tuberculosis
• O: osteomyelitis
• R: radiation
• M: multiple myeloma
• E: epidermoid

​TROMMEL

• T: tuberculosis
• R: radiation
• O: osteomyelitis
• M: multiple myeloma
• M: metastasis
• E: epidermoid
• L: lymphoma/Langerhans cell histiocytosis