Malakoplakia

Malakoplakia is a thingy that typically arises in the bladder.

Microscopic features:

• Large foamy macrophages with granular cytoplasm.
• Occasional multinucleated giant cell.
• Lymphocytes.
• Basophilic calcified lysosomes (Michaelis-Gutmann bodies).
  • May be inside or outside of macrophages - often size of RBC or larger.

Image:

• Malakoplakia (pathconsultddx.com)

See also

• Urinary bladder.
• Malignant kidney.
• Medical kidney.