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Oct. 22, 2025, 2:08 PM EDTBy Elizabeth CohenWhen a radiologist reviewed Deirdre Hall’s mammogram images last summer, everything seemed fine. There were no shadows or lumps or irregular patches that could signal cancer.The doctor gave it a second look for one reason: artificial intelligence software had drawn a circle around an area in the upper part of her left breast that it found suspicious.Because the AI software had put up that red flag, Hall, 55, got an order for an ultrasound that led to a biopsy. There were four cancerous tumors in the spot AI had identified.“This would have been completely missed without the AI,” said Dr. Sean Raj, chief medical officer and chief innovation officer at SimonMed Imaging in Tempe, Arizona, where Hall had her mammogram.Not only was Hall’s breast tissue dense, but the layers of tissue crisscrossed over each other in a particularly complicated pattern.“It camouflaged the cancer,” said Raj, a breast imaging specialist. “Even I could have missed it.”They caught her cancer at Stage 1, said Hall, who’s a respiratory therapist at a local hospital.“They didn’t find anything in the lymph nodes, which they were grateful for,” she said. “I’m so glad they caught it early.” “I’m glad it was found,” Deirdre Hall said about the software program that detected suspicious images on her mammogram.Courtesy Deirdre HallWhen reading women’s routine mammograms, radiologists are increasingly augmenting their eyes with artificial intelligence. While many major medical centers have adopted the technology enthusiastically, some experts point to concerns, including a lack of studies in the U.S. showing that AI actually saves lives and does not needlessly raise concerns about benign growths. Experts train AI software by feeding it hundreds of thousands, or sometimes millions of mammogram images. Some of the images contain cancerous tumors, and, over time, the AI learns to distinguish the often subtle differences between malignant and benign tissue. Some AI programs, like the one used on Hall, identify a suspicious area. Others predict the chance that a woman will develop breast cancer. At the University of California, San Francisco, researchers are using AI to try to speed up the time from a mammogram to cancer diagnosis. In a study released this week, the radiologists used the technology to flag suspicious-looking mammograms so those patients could be seen more quickly. For patients with breast cancer, that AI triage cut the average time from mammogram to biopsy by 87%, from 73 days to nine days. The study was posted Tuesday to the preprint server MedRxiv. (Studies posted to preprint servers have not been peer-reviewed.) AI software used by SimonMed Imaging, where Hall had her mammogram, marked an area suspicious for cancer.Courtesy Deirdre HallHowever, Dr. Sonja Hughes, vice president of community health at Susan G. Komen, a breast cancer organization, said more research is needed before AI is used as the standard of care. “We’re not there yet,” she said. “We don’t have enough research or enough data.”Dense breasts: Finding a snowball in a blizzardMammograms have saved countless lives, but they’re imperfect. Dense breast tissue, which is a risk factor for developing cancer, makes mammograms harder to interpret. About 40% of U.S. women have dense breasts, according to the American Cancer Society. “It’s like trying to find a snowball in a blizzard,” said Dr. Otis Brawley, a professor of oncology and epidemiology at Johns Hopkins University.The Food and Drug Administration has authorized many AI programs for mammograms, with varying rates of accuracy. The AI software used on Hall’s mammogram, called Lunit, accurately identified cancers 88.6% of the time, according to a 2024 JAMA Oncology study of more than 8,800 women in Sweden who got mammograms. Another study published in Radiology noted that AI software caught cancers that were missed by two radiologists. However, in the Sweden study, AI gave a false positive 7% of the time, saying there might be a tumor when there wasn’t one. A false positive can trigger more testing and anxiety while waiting for results. With any mammogram, the chance of having a false positive result is about 10%, according to research.A doctor interprets the screening’s resultsMajor academic medical centers using AI in their imaging centers include the MD Anderson Cancer Center, the Mount Sinai Hospital in New York City, the Perelman Center for Advanced Medicine at the University of Pennsylvania, the Siteman Cancer Center at Barnes-Jewish Hospital, and MedStar Health.In all centers, the software is used along with, not instead of, a radiologist’s eyes, as FDA regulations require a doctor to interpret mammograms. Some breast imaging experts see advantages to this human-machine combination.“The nice thing about AI is that it doesn’t get tired,” said Dr. Lisa Abramson, associate professor of radiology at Mount Sinai. “It’s not going to replace the job or the expertise of radiologists, but I think it’s only going to enhance our ability to detect more and more breast cancers.”Brawley, the Johns Hopkins professor, said AI could help women who don’t have access to radiologists who specialize in breast imaging, and instead have their mammograms read by general radiologists.A study using RadNet’s software found that without AI, specialists correctly identified breast cancers 89% of the time, compared with 84% for generalists. With AI, the accuracy for both groups rose to about 93%.“It’s incredibly subjective when a human reads a mammogram,” Brawley said. “Maybe it’s going to reduce the disparities in how these things are read.”Does AI cost more? Typically, academic medical centers don’t charge patients extra for the use of AI software, and they can’t charge insurance companies for it, since there’s no billing code specifically for the AI, according to Susan G. Komen, a nonprofit breast cancer organization. SimonMed, which has centers in 11 states, and RadNet, which has centers in eight states, don’t charge for an initial layer of AI on mammograms, although patients are charged $40 and $50 respectively if they opt to have their images run through a second set of the technology.Drawbacks of AIBrawley worries that AI might be too good at its job.According to the American Cancer Society, it’s possible that mammograms flag some tumors that are technically cancerous, but not life-threatening. The patient then undergoes the physical, emotional, and financial toll of treating a tumor that was never going to hurt her.“It’scancer, but it’s not genetically programmed to grow, spread, or kill,” Brawley said. “I am worried that AI may help us find even more of these tumors that don’t need to be found.”Brawley pointed to the lack of data in the U.S. that shows AI actually saves women’s lives.Last month, researchers at the University of California, Los Angeles and University of California, Davis, announced a $16 million, two-year study at seven medical centers to take a deeper look at the technology.There are several other concerns about using AI in mammography. The technology isn’t perfect, and some worry that doctors could make mistakes if they become too dependent on it, according to an article last year in RadioGraphics. That’s why radiologists emphasize that AI is a tool, not a solution in itself. “It’s not going to replace the job or the expertise of radiologists,” said Abramson, the breast radiologist at Mount Sinai. “I think it’s only going to enhance our ability to detect more and more breast cancer.” Another concern is that if AI is trained mainly on breast images of white women, it could be less accurate for women of color, since genetic differences can make tumors look different.Hall, the Arizona patient, said she’s not necessarily a fan of AI in general — she says she finds the technology “creepy” — but she’s glad she paid $50 for the extra AI on her mammogram. “I don’t love all this AI stuff, but I definitely love this for me or anyone else in my position,” she said. “No matter how it was found, I’m glad it was found.” Guidance for mammogramsGuidance from the United Services Preventive Services Task Force recommends women to get a mammogram every other year starting at age 40. According to American Cancer Society guidelines:Women 45 to 54 should get mammograms every year.Women 55 and older can switch to a mammogram every other year, or they can choose to continue yearly mammograms.Dr. Shanthi Sivendran, senior vice president at the American Cancer Society, offers guidance for more accurate breast cancer screening. Try to go to the same place every year so radiologists can compare your images over time.Ask if a center uses radiologists who’ve completed a fellowship in breast imaging. In some rural or underserved areas, it may be harder to find these specialists, and so women should seek out radiologists who primarily read breast images. Try to find a center that can either provide or direct you to follow-up care, such as additional imaging, in case your mammogram finds something suspicious. According to FDA regulations, your mammogram report should state if you have dense breasts. If you do, ask your doctor about whether you might need additional imaging tests. Elizabeth CohenElizabeth Cohen is a Peabody Award-winning journalist and a health contributor to NBC News. She is the author of the book “The Empowered Patient.”

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Oct. 22, 2025, 10:11 PM EDTBy Rich Schapiro and Morgan CheskyThe first video “Richard LA” posted to TikTok appeared on Aug. 21, 2024. “Accident at 27th and San Pedro,” he wrote in Spanish under video clips showing two damaged cars and paramedics pushing a man on a gurney into an ambulance. “2 people were taken to the hospital.”“Richard LA” was actually Carlitos Ricardo Parias, 44, a father of two living in southern Los Angeles. His TikTok feed soon filled with similar clips. A fire at a home on 36th and Trinity streets. A car crash on 29th Street and Maple Avenue. His audience grew steadily over the ensuing months. And his clips were consumed even more widely when he began to focus his camera on the Immigration and Customs Enforcement raids roiling Los Angeles. Multiple videos he posted this month got more than 50,000 views. “He has risen to become this very credible, respected and admired citizen journalist,” said Angelina Dumarot, a spokesperson for Los Angeles City Council member Curren Price. “He did it with a lot of love and a lot of passion and in a very courageous way.”But there was something many didn’t know: Parias was an undocumented immigrant himself, according to federal authorities. And on Tuesday, he was targeted by federal agents trying to arrest him in an immigration proceeding, leading to a chaotic confrontation in downtown Los Angeles.”Parias was the subject of an administrative immigration arrest warrant and had avoided capture before,” prosecutors said.After having watched Parias walk out of his home and drive off around 8:45 a.m., agents boxed in his Toyota Camry, federal prosecutors say. The agents left their vehicles and ordered Parias out of his car. But he instead drove forward and backward, striking two of the law enforcement vehicles, according to prosecutors.When an agent tried to break the Camry’s driver’s side window, prosecutors said, Parias drove “more aggressively.” Plumes of smoke began to billow from the vehicles, apparently because of the spinning tires, prosecutors said. With the agents fearing Parias could hit them with his Camry or dislodge it from between their vehicles, one opened fire, prosecutors said. Parias was struck in the elbow, and a deputy marshal was hit in the hand, according to prosecutors. A witness who arrived as the agents were wrestling Parias out of his car said it felt like a “little war zone.”“The man was clearly in a lot of pain,” said the witness, who spoke on the condition of anonymity.Parias, who is charged with assault on a federal officer, was still in the hospital Wednesday, postponing his first court hearing. Immigration attorney Carlos Jurado speaks to the media in front of Dignity Health California Hospital Medical Center in Los Angeles on Sunday.Keith Birmingham / MediaNews Group/Pasadena Star-News via Getty ImagesHis immigration attorney, Carlos Jurado, told NBC News that he tried to speak to his client Tuesday night but was barred from doing so. Jurado said they had a brief conversation by phone Wednesday morning.“He was confused as to his medical condition, as to the severity of his injuries, and he was confused as to what was going on,” Jurado said.A spokesperson for the U.S. attorney’s office in Los Angeles said she wasn’t privy to Parias’ medical condition and doesn’t know when his first appearance will be.An ICE spokesperson didn’t immediately respond to a request for comment. Parias was an unlikely social media star. A native of Puebla, Mexico, he was working in construction before he embarked on a path as a citizen journalist. “His car was full of tools,” said Jose Ugarte, a deputy chief of staff to Price, the City Council member. “He said it was kind of tough these days to find work.”So he turned to recording videos of the goings-on in his neighborhood and posting them to social media. He often went live at crime or accident scenes, calmly narrating the events playing out in front of him.Unlike some citizen journalists, Parias would steer clear of interfering with law enforcement or engaging in confrontations of any kind, according to Ugarte and others familiar with his work. Parias started becoming well-known in the tight-knit, heavily Latino district where he lived. But not all of his good deeds were broadcast on social media. A neighbor said Parias’ once tracked down her husband to alert him that their car window was left down.“He didn’t have to do that,” said the neighbor, who spoke on the condition of anonymity over fears of being targeted by federal agents. “He’s just a very good person,” she added.In August, Price’s office presented Parias with a certificate of recognition in honor of his “unwavering commitment to keeping the South LA community informed, empowered and protected.”Ugarte said Parias shed tears when he was presented with the certificate at a neighborhood park, with his teenage son looking on. News of his shooting and arrest shocked and saddened many who had come to rely on his reports, according to the staffers in Price’s office.“The whole community is shaken up,” Dumarot said. “This feels very targeted, and not for the right reasons.”Ugarte said it wasn’t uncommon for Parias to reach out about incidents in the neighborhood. Their last exchange, Ugarte said, came Sept. 26, when Parias sent him an urgent message.“Jose, there is a fire on 55th and Avalon,” it read. “Please send the fire department as soon as possible.”Ugarte said he called the fire department and was told it was on its way. When he checked TikTok, he saw that Parias had gotten there first and was already recording. Rich Schapiro Rich Schapiro is a reporter with the NBC News national security unit.Morgan CheskyMorgan Chesky is a correspondent for NBC News.

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Oct. 3, 2025, 11:47 AM EDTBy Rebecca ShabadWASHINGTON — President Donald Trump said he’s giving Hamas until 6 p.m. Sunday to accept the ceasefire proposal his administration offered this week to end the war in Gaza.“If this LAST CHANCE agreement is not reached, all HELL, like no one has ever seen before, will break out against Hamas,” Trump wrote Friday in a lengthy post on Truth Social.Trump said earlier this week that he would give Hamas three to four days to respond to the plan, which Israel has backed. Qatar, which had been helping faciliate peace efforts, said it was delivered to a Hamas delegation on Monday evening by Qatari and Egyptian officials.The president claimed 25,000 members of Hamas have been killed following the militant group’s Oct. 7, 2023, terrorist attack on Israel. He also suggested that he would “give the word” on whether to further decimate the group, though U.S. forces are not in Gaza.“Most of the rest are surrounded and MILITARILY TRAPPED, just waiting for me to give the word, ‘GO,’ for their lives to be quickly extinguished. As for the rest, we know where and who you are, and you will be hunted down, and killed. I am asking that all innocent Palestinians immediately leave this area of potentially great future death for safer parts of Gaza,” he said.But then he said that Hamas would be given “one last chance!”“THIS DEAL ALSO SPARES THE LIVES OF ALL REMAINING HAMAS FIGHTERS!” he wrote. “The details of the document are known to the WORLD, and it is a great one for ALL! We will have PEACE in the Middle East one way or the other. The violence and bloodshed will stop. RELEASES THE HOSTAGES, ALL OF THEM, INCLUDING THE BODIES OF THOSE THAT ARE DEAD, NOW!”Trump unveiled the 20-point peace proposal on Monday during Israeli Prime Minister Benjamin Netanyahu’s visit to the White House. The plan’s key parts include the simultaneous release of all 48 living and dead hostages held in Gaza, a requirement for Hamas to decommission their weapons, a phased withdrawal of Israeli troops from the territory, an influx of humanitarian aid and the installation of a civilian governing authority for Palestinians. A host of nations in the region, including Qatar, Egypt and Turkey, also offered support for the proposal.Speaking to the press corps with Trump on Monday, Netanyahu warned that if Hamas rejects the plan or accepts it and doesn’t follow through on its promises, “then Israel will finish the job by itself.””This can be done the easy way, or it can be done the hard way, but it will be done,” Netanyahu said. “We prefer the easy way, but it has to be done.”The president said that if Hamas doesn’t agree to the deal, Israel would have “my full backing to finish the job of destroying the threat of Hamas, but I hope that we’re going to have a deal for peace.”Trump said of Hamas, “They’re the only one left. Everyone else has accepted it, but I have a feeling that we’re going to have a positive answer.”Rebecca ShabadRebecca Shabad is a politics reporter for NBC News based in Washington.

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