NEW YORK (CBSNewYork) — A Queens man is filing a lawsuit after his hand had to be amputated at a city hospital after a blood pressure monitoring line was inserted.

As WCBS 880’s Peter Haskell reported, Jose Polanco held up his gauze-covered right arm at a Thursday news conference. His hand was amputated after he went to NYC Health + Hospitals/Elmhurst with pneumonia.

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Polanco pointed to two puncture wounds near his biceps.

“It went black from here all the way down to my hand,” he said.

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Polanco’s attorney, Sanford Rubenstein, said it was gangrene. He is planning on suing the city for $1 million.

“Something went wrong in that it was negligence, medical malpractice as we allege in our claim against the city,” Rubenstein said, “and the manner in which a line was placed to monitor his blood pressure.”

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A hospital spokesman said he has not seen the claim and cannot comment.