intramuskuläre Metastasen
Skeletal muscle metastases are uncommon compared to other sites and are generally seen in the context of widespread metastatic disease.
Epidemiology
Post-mortem rates of skeletal metastases vary between 0.03% and 17% .
Clinical presentation
Most commonly asymptomatic .
Pathology
Common primary tumors include:
- lung cancer (most common )
- pancreatic cancer
- renal cancer
- colorectal cancer
- lung cancer
- gastric cancer
- ovarian cancer
- malignant melanoma
- malignant pleural mesothelioma
- esophageal adenocarcinoma
Often the primary site is unknown.
Location
The most common sites for skeletal metastases are :
- iliopsoas muscle (most common)
- gluteal muscles
- paraspinal muscles
- lower extremity muscles
- abdominal wall musculature
- thoracic wall musculature
Radiographic features
CT
- most commonly an intramuscular hypodense lesion with peripheral enhancement
MRI
Features include :
- T1: isointense to muscle
- T2: heterogeneous signal with peri-lesion edema
- C+: peripheral enhancement
Differential diagnosis
Consider a primary soft tissue sarcoma or intramuscular abscess .
Siehe auch:
- Lungenkarzinom
- Adenokarzinom des Magens
- Malignes Melanom Metastase
- Metastasen Nierenzellkarzinom
- Weichteilmetastasen
- metastases from pancreatic cancer
und weiter:
Assoziationen und Differentialdiagnosen zu intramuskuläre Metastasen:
