Subcutaneous Myoepithelioma in the Extremity: A Potential Pitfall in the Differential Diagnosis of Subcutaneous Tumors.
Minsun KooYoung Chan WiJimin KimSheen-Woo LeePublished in: Medicina (Kaunas, Lithuania) (2023)
We present a rare case of myoepithelioma in the subcutaneous layer of the shoulder with ultrasonography (US) and magnetic resonance imaging (MRI). US showed a lobulated hyperechoic mass, leading to an impression of lipoma. MRI showed the mass with low signal intensity on T1-weighted images (T1WI), high signal intensity on fat-suppressed T2-weighted images (T2WI), intermediate signal intensity on T2WI, and intense enhancement with adjacent fascial thickening. Imaging findings of soft tissue myoepithelioma have not been established. We report its US and MRI features mimicking features from a lipomatous tumor to infiltrative malignancy. Although soft tissue myoepithelioma has nonspecific image findings to confirm its diagnosis, some findings may help to make the differential diagnosis. Preoperative pathologic confirmation is recommended in a soft tissue neoplasm.
Keyphrases
- contrast enhanced
- soft tissue
- magnetic resonance imaging
- rare case
- magnetic resonance
- computed tomography
- deep learning
- diffusion weighted imaging
- high intensity
- convolutional neural network
- optical coherence tomography
- adipose tissue
- high resolution
- neoadjuvant chemotherapy
- radiation therapy
- high grade
- mass spectrometry
- human health
- photodynamic therapy
- lymph node
- risk assessment
- machine learning
- climate change
- locally advanced
- network analysis