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Epithelioid sarcoma with unusual radiological findings
M Yamato1, G Nishimura, T Yamaguchi
1Department of Radiology, Dokkyo University School of Medicine, Tochigi, Japan.
Skeletal Radiology
|November 15, 1997
Summary
Epithelioid sarcoma diagnosis can be challenging due to complex MR imaging findings. This case highlights the importance of considering rare tumor manifestations and their underlying pathological causes.
Area of Science:
- Oncology
- Radiology
- Pathology
Background:
- Epithelioid sarcoma is a rare soft tissue sarcoma.
- Accurate diagnosis is crucial for effective treatment.
Observation:
- A patient presented with an epithelioid sarcoma in the right arm.
- Initial magnetic resonance (MR) findings were complex, including a honeycomb pattern simulating lymphedema and diffuse intramuscular T2 high signal intensity.
- These findings led to diagnostic delays.
Findings:
- Histopathology revealed denervation due to perineural invasion caused the diffuse muscular abnormality.
- Subcutaneous edema resulted from lymphatic tumor spread and fibrosis.
- Cortical erosions in the humerus, a rare sign, were noted later.
Implications:
- This case underscores the diagnostic challenges posed by epithelioid sarcoma.
- Recognizing subtle and rare imaging features is vital for early detection.
- Understanding the pathological basis of imaging findings improves diagnostic accuracy.