There was an MRI exam this time, and it revealed another dose of bad news for the Mets.

The team announced Monday that Noah Syndergaard has a partial tear of his right lat muscle. He was placed on the 10-day disabled list, and there is no timetable for his return.

Syndergaard left Sunday’s start against the Nationals in discomfort, and had an MRI exam early Monday at the Hospital for Special Surgery.

The 24-year-old flamethrower previously refused an MRI when dealing with a biceps issue last week.

To give an approximate sense of the timing: When Steven Matz suffered a similar lat injury in late 2015, he missed roughly two months.

Matz has yet to make a start this season because of a strained flexor tendon, Seth Lugo is sidelined by a torn elbow ligament and now Syndergaard’s injury further diminishes a Mets rotation they were depending on to be the strength of the team. The Mets also are without their most important hitter, Yoenis Cespedes, due a strained hamstring, plus Lucas Duda and Wilmer Flores (on rehab assignments at Single-A).

Syndergaard, who had bulked up over the offseason, had been off to a dominant April — he had a 1.73 ERA, 30 strikeouts and zero walks through four starts — before giving up five runs in the first inning against the Nationals on Sunday.

In the second inning, he reached for his side in pain, and that is the last time fans will see him on the mound for quite a while.