Skeletal muscle metastases

Dr Owen Kang and Dr Henry Knipe et al.

Skeletal muscle metastases are uncommon compared to other sites and are generally seen in the context of widespread metastatic disease. 

Post-mortem rates of skeletal metastases vary between 0.03% and 17% 1

Most commonly asymptomatic 2,3

Common primary tumours include 2,3:

Often the primary site is unknown. 

The most common sites for skeletal metastases are 1,3:

  • most commonly an intramuscular hypodense lesion with peripheral enhancement 3,4

Features include 4:

  • T1: isointense to muscle
  • T2: heterogeneous signal with peri-lesion oedema
  • C+: peripheral enhancement

Consider a primary soft tissue sarcoma or intramuscular abscess 2,3

Share article

Article information

rID: 35310
Synonyms or Alternate Spellings:
  • Metastases to skeletal muscles
  • Skeletal muscle metastasis

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.