Dr. J. Leonard Lichtenfeld

CT
CT colonography and Medicare: Are we the enemy?
In this editorial opinion, Dr. Len Lichtenfeld, deputy chief medical officer for the American Cancer Society, outlines his concerns over an editorial in the New England Journal of Medicine praising the decision by the U.S. Centers for Medicare and Medicaid Services not to cover CT colonography -- as well as his objections to the CMS decision itself.
June 23, 2009
2009 06 23 14 37 33 976 Second Opinion Am
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Cardiac MRI-based ML model predicts MACE risk for STEMI patients
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The findings could translate to better care for patients who require repeated contrast-enhanced imaging.
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The findings highlight the need for systematic dose tracking and rigorous justification of imaging.
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Findings suggest a possible hazard associated with postoperative radiotherapy.
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Images of a 39-year-old who underwent screening mammography. Right craniocaudal (left) and mediolateral oblique (middle) views from preoperative mammography show suspicious grouped fine pleomorphic calcifications (arrows). After biopsy showed ductal carcinoma of situ (DCIS), patient underwent breast-conserving surgery, yielding final diagnosis of ductal carcinoma in situ (intermediate grade, hormone receptor positive). (Right) Screenshot of an output of a commercial AI tool applied to preoperative mammography. AI detected right breast lesion with score of 95% on both views (concentric colored circles). Present study’s reviewing radiologist deemed AI marking to correspond with site of DCIS.
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The modality correctly diagnoses dermoids and simple cysts, but is not as effective at identifying other types of adnexal lesions.
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Axial contrast-enhanced CT scan in a 28-year-old premenopausal woman shows an incidentally detected solid-appearing left ovarian lesion (solid arrow) anterior to the uterus (U), associated with trace ascites in the right adnexa and cul de sac (dashed arrows). At pathologic analysis, this was shown to be ovarian dysgerminoma. Two readers misdiagnosed this lesion, one as a leiomyoma and one as an ovarian fibroma.
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