In juvenile polyposis, the colorectal polyps feature striking multilobulation. This patient's polyps also had zones of low-grade...

This was a foot lesion in an elderly man who was HIV negative. This would conform to classic type Kaposi sarcoma. Case provided by Dr....

A splendid angiomatoid (malignant) fibrous histiocytoma. As of 2013, the WHO reclassified them as angiomatoid fibrous histiocytoma, but...