Abstract：
OBJECTIVE: Parenchymal breast cysts are considered to be rare in men and are sparsely described in the literature. The purpose of this study was to review our institution\'s experience with male breast cysts in an effort to improve overall understanding and management of this rare entity.
METHODS: An institutional review board-exempt retrospective study was performed. Radiology reports for males who underwent mammogram and/or breast ultrasound at any of our institution\'s primary or satellite locations from January 1995 to January 2020 were screened to find males with breast cysts. If cysts were reported and images were available, case review was performed to confirm parenchymal breast cyst(s) and patient characteristics were collated.
RESULTS: Of 5425 male cases presenting for breast imaging, 19 (0.4%) cases of male breast cysts were confirmed, with a mean patient age of 41.6 years (range: 2-81 years). The most common indication leading to cyst discovery was a palpable lump, corresponding to the site of the cyst in 5 (26.3%) patients and near the site where cyst(s) were ultimately discovered in 7 (36.8%) patients. There were 8 (42.1%) instances of cysts without concurrent gynecomastia. Three (15.8%) men underwent needle sampling. There were no cases of atypia or malignancy on needle biopsy or on subsequent clinical follow-up, with median clinical follow-up of 70.3 months (range: 3.3-259.4 months).
CONCLUSIONS: Male breast parenchymal cysts are rare, but their prevalence is likely underestimated. If detected incidentally or upon targeted evaluation, biopsy may be averted if classic benign cyst features are identified.
METHODS: An institutional review board-exempt retrospective study was performed. Radiology reports for males who underwent mammogram and/or breast ultrasound at any of our institution\'s primary or satellite locations from January 1995 to January 2020 were screened to find males with breast cysts. If cysts were reported and images were available, case review was performed to confirm parenchymal breast cyst(s) and patient characteristics were collated.
RESULTS: Of 5425 male cases presenting for breast imaging, 19 (0.4%) cases of male breast cysts were confirmed, with a mean patient age of 41.6 years (range: 2-81 years). The most common indication leading to cyst discovery was a palpable lump, corresponding to the site of the cyst in 5 (26.3%) patients and near the site where cyst(s) were ultimately discovered in 7 (36.8%) patients. There were 8 (42.1%) instances of cysts without concurrent gynecomastia. Three (15.8%) men underwent needle sampling. There were no cases of atypia or malignancy on needle biopsy or on subsequent clinical follow-up, with median clinical follow-up of 70.3 months (range: 3.3-259.4 months).
CONCLUSIONS: Male breast parenchymal cysts are rare, but their prevalence is likely underestimated. If detected incidentally or upon targeted evaluation, biopsy may be averted if classic benign cyst features are identified.
摘要：
目的：乳腺实质囊肿在男性中被认为是罕见的，并且在文献中描述很少。这项研究的目的是回顾我们机构对男性乳腺囊肿的经验，以提高对这种罕见实体的整体理解和管理。
方法：进行了机构审查委员会豁免的回顾性研究。对1995年1月至2020年1月在我们机构的任何主要或卫星位置接受乳房X线照片和/或乳房超声检查的男性的放射学报告进行了筛查，以发现男性乳腺囊肿。如果报告了囊肿并且有图像，进行病例回顾以确认乳腺实质囊肿,并对患者特征进行整理.
结果：在5425例男性乳腺成像病例中，确诊男性乳腺囊肿19例(0.4%),患者平均年龄为41.6岁（范围：2-81岁）。导致囊肿发现的最常见指征是明显的肿块，对应于5例（26.3％）患者的囊肿部位，以及7例（36.8％）患者最终发现囊肿的部位附近。有8例（42.1％）囊肿没有并发男性乳房发育症。三名(15.8%)男性接受了针头取样。在穿刺活检或随后的临床随访中，没有异型或恶性病例。中位临床随访时间为70.3个月（范围：3.3-259.4个月）。
结论：男性乳腺实质囊肿少见，但他们的患病率可能被低估了。如果偶然发现或有针对性的评估，如果确定了经典的良性囊肿特征，则可以避免活检。
方法：进行了机构审查委员会豁免的回顾性研究。对1995年1月至2020年1月在我们机构的任何主要或卫星位置接受乳房X线照片和/或乳房超声检查的男性的放射学报告进行了筛查，以发现男性乳腺囊肿。如果报告了囊肿并且有图像，进行病例回顾以确认乳腺实质囊肿,并对患者特征进行整理.
结果：在5425例男性乳腺成像病例中，确诊男性乳腺囊肿19例(0.4%),患者平均年龄为41.6岁（范围：2-81岁）。导致囊肿发现的最常见指征是明显的肿块，对应于5例（26.3％）患者的囊肿部位，以及7例（36.8％）患者最终发现囊肿的部位附近。有8例（42.1％）囊肿没有并发男性乳房发育症。三名(15.8%)男性接受了针头取样。在穿刺活检或随后的临床随访中，没有异型或恶性病例。中位临床随访时间为70.3个月（范围：3.3-259.4个月）。
结论：男性乳腺实质囊肿少见，但他们的患病率可能被低估了。如果偶然发现或有针对性的评估，如果确定了经典的良性囊肿特征，则可以避免活检。
