Diffuse Large B Cell Lymphoma

Variant: Microvillous Large B Cell Lymphoma

Alternate names
- Anemone cell lymphoma
- Villiform cell lymphoma
- Porcupine cell lymphoma
- Filiform cell lymphoma
Numerous microvilli seen by electron microscopy
- No desmosomes as seen in carcinoma or mesothelioma
No distinctive histologic pattern
- Some are sinusoidal or have fibrillar matrix
- Rosettes seen in some lymphomas are composed of long cytoplasmic processes
  - Could be considered related to this variant
Same clinical behavior as usual diffuse large B cell lymphoma