Angiosarcoma (AS) is an uncommon malignant neoplasm characterized by rapidly proliferating, extensively infiltrating anaplastic cells derived from blood vessels. These are aggressive tumors and tend t...

Intravascular large B-cell lymphoma (IVL) is a rare subtype of large B cell lymphoma that is characterized by the proliferation of lymphoma cells within the lumina of small blood vessels, particularly...

Patient with primary gastric melanoma (PGM), 18-FDG-PET/CT scan. PGM is a rare clinical entity. Most melanomas identified in the stomach represent metastases from cutaneous sources. Although the cell ...