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Zhu, Alan

https://orcid.org/0000-0003-4132-0177

Mayo Clinic

Mayo Clinic

Citations 2

Positive Predictive Value and Breast Cancer Histology by the Method of Detection Across a Multistate Health Care Enterprise
Zhu, Alan , Harper, Laura, Maimone, S. I., Patel, Bhavika K, Girardo, Marlene E, Varner, Jacob, Rashid, Tariq , Khurana, A., Maimone, Santo , Patel, Bhavika , Khurana, Aditya , Harper, Laura , Maimone, Santo , Patel, Bhavika K , Khurana, Aditya , Sharpe, Richard E. , Girardo, Marlene

Journal of Breast Imaging | December 23, 2025 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1093/jbi/wbaf086 Get It

Abstract Objective To compare the pathology outcomes of image-guided breast biopsies across a multistate health care enterprise by the method of detection (MOD), including the positive predictive value (PPV3) and histological types. Methods Biopsies from October 31, 2017, to July 6, 2023, across 18 imaging sites in 4 states were extracted. Radiologists prospectively assigned MODs, including symptomatic presentations (self-examination, clinical examination) and imaging modalities (mammogram, tomosynthesis, US, MRI, contrast-enhanced mammogram, molecular breast imaging, other imaging). For each MOD, the rates of malignancy and cancer subtypes were calculated. Univariate and multivariate logistic regression analyses were performed. Results In 26 932 biopsies on 22 582 patients (mean age 57.6 years ± 14.2 [SD]; 22 416 women), 6068 (81.1%) cancers were detected by screening, and 1144 (15.3%) were detected by symptoms. Symptomatic presentation MODs had a higher PPV3 (43.0% vs 25.6%; P < .001), larger cancer lesion sizes (x̄ = 27.5 mm vs x̄ = 17.8 mm; P < 001), and a higher association with invasive carcinoma (96.7% vs 76.8%; P <.001) compared with screening imaging-based MODs. Methods of detection with higher PPV3s also tended to have higher rates of invasive carcinoma (Spearman’s ρ = 0.83). Conclusion Compared with breast cancers detected after symptomatic presentations, those identified via image-based screening were smaller and less often invasive, confirming the value of screening in early detection. Positive predictive value and the rate of invasive carcinoma varied in parallel across MODs.
Hemorrhagic Ovarian Cysts Over 50 mm
Zhu, Alan , Sugi, Mark , Young, Scott W. , Morgan, Tara A. , Patel, Maitray D , Sugi, Mark D , Young, Scott W , Patel, Maitray D.

Journal of Ultrasound in Medicine | September 30, 2025 | Volume: 45 | Issue: 3 | Pages: 497-507

10.1002/jum.70081 Get It

Objectives Evaluate the value of ultrasound specialist assessment of ovarian masses over 50 mm with sonograms interpreted as possible hemorrhagic ovarian cysts (HOC). Methods Retrospective review of consecutive endovaginal pelvic US reports of premenopausal women at one organization identified adnexal masses over 50 mm maximum diameter designated as possibly being HOC (large HOC). Four ultrasound specialists reviewed studies, scoring two assessments as true or false: 1) US features are most consistent with either an ovarian hemorrhagic cyst (HOC) or endometrioma; 2) If assessment 1 was true, the mass meets O‐RADS criteria of classic HOC except for size. Results A total of 457 of 51,305 women (0.9%) had reports indicating possible large HOC. For 366 patients with established outcomes, 225 (61.5%) had a large HOC (87.1% ≤ 70 mm). Assessment 1 was true for 318 patients; outcomes showed 224 (70.4%) HOC, 89 (28.0%) endometriomas, 4 (1.3%) TOAs, and 1 (0.3%) cystadenoma. Assessment 1 was false for 48 patients; outcomes showed 1 (2.1%) HOC, 1 (2.1%) endometrioma, 6 (12.5%) other non‐neoplastic cysts, 33 (68.8%) benign neoplasms, 5 (10.4%) borderline tumors, and 2 (4.2%) high‐grade malignancies. The decrease in neoplasms and malignancies with true assessment 1 was significant ( p < .001). Assessment 2 was true for 190 patients (180 [94.7%] HOC, 9 [4.7%] endometrioma, 1 [0.5%] cystadenoma), false for 128 patients (44 [34.4%] HOC, 80 [62.5%] endometrioma, and 4 [3.1%] TOA) ( p < .001), and not applicable for 48 patients. Conclusions Ultrasound specialist review of adnexal masses designated as a possible large HOC adds value since over 10% are neoplasms (nearly 2% malignant). Ultrasound specialist assessment can expedite additional imaging or intervention when necessary and obviate follow‐up when HOC features are typical.