A total of 25% of all tumors and cysts of the heart and pericardium are malignant – 33% are angiosarcomas, 20% are rhabdomyosarcomas, 15% are mesotheliomas and 10% are fibrosarcomas or other ...

Nuclear atypia, focal or diffuse anaplasia and sarcomatous tumors are all considered to be unfavourable histologic features.

The neoplasm showed small foci of blastematous and stromal components, and there were no areas of rhabdomyoblastic differentiation or anaplasia.

Malignant gliomas and metastatic tumors are the most common brain tumors. Neuroimaging plays a significant role clinically. In low-grade tumors, neuroimaging is needed to evaluate recurrent disease ...

Actinic keratoses are benign intraepithelial skin neoplasms constituted by atypical proliferation of keratinocytes that may evolve to squamous cell carcinoma. They develop in photoexposed skin areas; ...