Cysticercosis of breast.

Human cysticercosis, a parasitic infection caused by cysticercus cellulosae. This results from ova being swallowed or getting asses to human stomach by regurgitation from own adult worm. The larvae are liberated in stomach, penetrate the intestinal mucosa and carried to many parts of the body where they form cysterci, 0.5-1 cm cyst that contain the head of young worm. They do not grow further or migrate. The common sites are skeletal muscle, subcutaneous tissue, brain and eye. Breast is an uncommon site.