What is the tiny hole in my knee that produces stringy white discharge on squeezing?

Hello,

Welcome to icliniq.com.

I understand your concern. Although the attached photograph (attachments removed to protect the patient's privacy) is quite blurry, history suggests an epidermoid cyst. It is a benign condition in which there is a constant secretion of cheesy foul-smelling material from the cyst wall, which collects in the sac and discharges on the surface if squeezed. Although harmless, this can be frustrating to most patients. Treatment is to remove the cyst with the complete removal of the sac to prevent a recurrence. Take care.