Department of Breast Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan.
Asian J Surg. 2014 Jan;37(1):8-14. doi: 10.1016/j.asjsur.2013.07.007. Epub 2013 Aug 23.
The round block technique (RBT) is an oncoplastic technique in which only the perimamillary scars remain visible. We have performed RBT in cases that require resection of the breast tissue under the nipple-areola complex (NAC) and a modified round block technique (MRBT) in peripheral cases in which performing resection of the breast tissue under the NAC is unnecessary. We herein report the usefulness of these techniques.
The study participants consisted of 18 patients who underwent breast-conserving surgery (BCS) using MRBT or RBT between July 2010 and July 2011. In the cases using RBT, de-epithelialization between the outer and inner incision lines was performed and the dermis was cut at the side of the tumor location. For MRBT cases, the dermis was cut in all parts of the inner and outer circles, and the skin between the inner and outer incision lines was resected.
Cosmetic results were found to be excellent in three cases, good in eight cases, fair in five cases, and poor in two cases. In this study, the cosmetic results were unacceptable (fair and poor) in patients who underwent ≥25% resection or in whom the resected area was part of the lower portion of the breast.
These techniques are useful for performing BCS in the upper portion of the breast. However, if the excision volume is >20% or excision of part of the lower portion of the breast is required, other procedures should be considered.
圆块技术（RBT）是一种肿瘤整形技术，仅留下乳晕周围的疤痕可见。我们在需要切除乳晕复合体（NAC）下的乳腺组织的情况下进行 RBT，在不需要切除 NAC 下的乳腺组织的情况下进行改良圆块技术（MRBT）。我们在此报告这些技术的有用性。
研究参与者包括 18 名于 2010 年 7 月至 2011 年 7 月期间接受 MRBT 或 RBT 保乳手术（BCS）的患者。在使用 RBT 的病例中，在外切口线和内切口线之间进行去上皮化，在肿瘤位置的侧面切开真皮。对于 MRBT 病例，在内、外圆圈的所有部位切开真皮，并切除内、外切口线之间的皮肤。
3 例美容效果极佳，8 例良好，5 例一般，2 例较差。在这项研究中，接受≥25%切除的患者或切除区域为乳房下部的患者美容效果不可接受（一般和较差）。
这些技术对于乳房上部的 BCS 是有用的。然而，如果切除量>20%或需要切除乳房下部的一部分，则应考虑其他程序。
