{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T12:58:54Z","timestamp":1740142734289,"version":"3.37.3"},"reference-count":31,"publisher":"FapUNIFESP (SciELO)","issue":"3","license":[{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Radiol Bras"],"abstract":"<jats:p>Abstract  Objective: To estimate the frequency of lipid-poor adenomas (LPAs) in magnetic resonance imaging (MRI) examinations.  Materials and Methods: We retrospectively investigated adrenal lesions on MRI examinations performed in a total of 2,014 patients between January 2016 and December 2017. After exclusions, the sample comprised 69 patients with 74 proven adenomas. Two readers (reader 1 and reader 2) evaluated lesion size, laterality, homogeneity, signal drop on out-of-phase (OP) images, and the signal intensity index (SII). An LPA was defined as a lesion with no signal drop on OP images and an SII &lt; 16.5%. For 68 lesions, computed tomography (CT) scans (obtained within one year of the MRI) were also reviewed.  Results: Of the 69 patients evaluated, 42 (60.8%) were women and 27 (39.2%) were men. The mean age was 59.2 \u00b1 14.1 years. Among the 74 confirmed adrenal adenomas evaluated, the mean lesion size was 18.5 \u00b1 7.7 mm (range, 7.0-56.0 mm) for reader 1 and 21.0 \u00b1 8.3 mm (range, 7.0-55.0 mm) for reader 2 (p = 0.055). On the basis of the signal drop in OP MRI sequences, both readers identified five (6.8%) of the 74 lesions as being LPAs. When determined on the basis of the SII, that frequency was three (4.0%) for reader 1 and four (5.4%) for reader 2. On CT, 21 (30.8%) of the 68 lesions evaluated were classified as LPAs.  Conclusion: The prevalence of LPA was significantly lower on MRI than on CT. That prevalence tends to be even lower when the definition of LPA relies on a quantitative analysis rather than on a qualitative (visual) analysis.<\/jats:p>","DOI":"10.1590\/0100-3984.2021.0083","type":"journal-article","created":{"date-parts":[[2022,5,2]],"date-time":"2022-05-02T19:56:22Z","timestamp":1651521382000},"page":"145-150","source":"Crossref","is-referenced-by-count":2,"title":["Frequency of lipid-poor adrenal adenomas in magnetic resonance imaging examinations of the abdomen"],"prefix":"10.1590","volume":"55","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4843-4046","authenticated-orcid":false,"given":"Victor Guerra","family":"Martins","sequence":"first","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8578-3136","authenticated-orcid":false,"given":"Cecilia Vidal S","family":"Torres","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6744-9441","authenticated-orcid":false,"given":"Livia Mara","family":"Mermejo","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7656-0181","authenticated-orcid":false,"given":"Silvio","family":"Tucci Jr.","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5118-778X","authenticated-orcid":false,"given":"Carlos Augusto Fernandes","family":"Molina","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1158-1045","authenticated-orcid":false,"given":"Jorge","family":"Elias Jr.","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4700-0599","authenticated-orcid":false,"given":"Valdair Francisco","family":"Muglia","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","published-online":{"date-parts":[[2022,5]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"754","DOI":"10.1016\/j.jacr.2010.06.013","article-title":"Managing incidental findings on abdominal CT: white paper of the ACR incidental findings committee","volume":"7","author":"Berland LL","year":"2010","journal-title":"J Am Coll Radiol"},{"key":"ref2","doi-asserted-by":"crossref","first-page":"601","DOI":"10.1056\/NEJMcp065470","article-title":"Clinical practice. 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Radiol"},{"key":"ref28","doi-asserted-by":"crossref","first-page":"86","DOI":"10.1590\/0100-3984.2019.0095","article-title":"The value of signal intensity on T1-weighted chemical shift magnetic resonance imaging combined with proton magnetic resonance spectroscopy for the diagnosis of adrenal adenomas","volume":"53","author":"Dalavia CC","year":"2020","journal-title":"Radiol Bras"},{"key":"ref29","doi-asserted-by":"crossref","first-page":"G1","DOI":"10.1530\/EJE-16-0467","article-title":"Management of adrenal incidentalomas: European Society of Endocrinology Clinical Practice Guideline in collaboration with the European Network for the Study of Adrenal Tumors","volume":"175","author":"Fassnacht M","year":"2016","journal-title":"Eur J Endocrinol"},{"key":"ref30","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1016\/j.euf.2015.12.006","article-title":"Management of the incidental adrenal mass","volume":"3","author":"Thomas AZ","year":"2016","journal-title":"Eur Urol Focus"},{"issue":"Suppl 1","key":"ref31","doi-asserted-by":"crossref","first-page":"1","DOI":"10.4158\/EP.15.S1.1","article-title":"American Association of Clinical Endocrinologists and American Association of Endocrine Surgeons medical guidelines for the management of adrenal incidentalomas","volume":"15","author":"Zeiger MA","year":"2009","journal-title":"Endocr Pract"}],"container-title":["Radiologia Brasileira"],"original-title":["Frequ\u00eancia de adenomas adrenais pobres em lip\u00eddios em exames de resson\u00e2ncia magn\u00e9tica abdominal"],"link":[{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_pdf&pid=S0100-39842022000300145&tlng=en","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,7,26]],"date-time":"2022-07-26T19:44:36Z","timestamp":1658864676000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S0100-39842022000300145&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,5]]},"references-count":31,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2022,5]]}},"alternative-id":["S0100-39842022000300145"],"URL":"https:\/\/doi.org\/10.1590\/0100-3984.2021.0083","relation":{},"ISSN":["1678-7099"],"issn-type":[{"type":"electronic","value":"1678-7099"}],"subject":[],"published":{"date-parts":[[2022,5]]}}}