Cyst

In the 1960s, a brilliant but misguided doctor creates a machine that can remove abnormal growths from the skin. However, his nurse is concerned that the machine may be dangerous for patients. Their disagreement leads to a horrific accident, and the machine malfunctions, creating a massive cyst monster that wreaks havoc and terrorizes the office. As the creature continues its rampage, it becomes clear that it will stop at nothing to satisfy its hunger for human flesh and blood.

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Some movies that have similar genres and were produced around the same time as Cyst include Companion, Silent Night, Freaks of Nature, Happy Death Day 2U, The Last Sharknado: It's About Time, The Dead Don't Die.