Looks like intercostal neuralgia.

"exited out the intercostal muscle.

And there it is at the fifth intercostal.

Penetrating stab wound between the third and fourth intercostal.

Went to the third intercostal space and exited the back.

I accidentally nicked his intercostal artery, now he's got a haematoma.

I accidentally nicked his intercostal artery, now he's got a haematoma.

Make a large, anterior, lateral, midaxillary incision in the fifth intercostal space.

Yeah, the bullet entered the back through the left intercostal space between the third and fourth ribs.

The weapon could have passed through the eighth intercostal space, perforating the lung, causing her to bleed to death.