Can anyone help interpret my dog’s chest X-rays

Posting for my friend as he does not have a reddit account

Species: dog

Age: 8.5

Sex/Neuter status: female/ neutered

Breed: street mix no one knows

Body weight: 15.5

History: none that we know, adopted out of Ukraine warzone

linical signs: ??

Duration: Few days ago

Your general location: Europe

My dog is an 8-year-old spayed mixed-breed female, approximately 15.5 kg. She has a large lump on her belly/body wall that may need surgical removal. The vets took three-view chest X-rays to check whether a possible cancer has spread to her lungs, because that would affect whether surgery is worthwhile. Three vets have reviewed the images but could not reach a conclusion, so they are being sent to a veterinary radiologist. I understand nobody can diagnose her from a Reddit post, and I will still wait for the specialist’s report, but I would appreciate any informed observations.The lump has not yet been definitively diagnosed as benign or malignant.I’ll attach all three original X-ray views. Thank you for any guidance on what questions I should ask the radiologist and surgeon. As English is not my native language this post has been co-written by a clanker.

https://imgur.com/a/oIxUswE