Introduction There are many techniques to treat congenital concealed penis (CP). Skin resurfacing is the most difficult step in severe cases. We aim to show medium-term results of coronal sulcus–based triangular ventral mucosal flap (CBVMF) as a treatment of prepubertal severe CP, a recently reported technique. We aim to determine whether results are durable and if the technique is associated with persistent mucosal redundancy or with a permanent unequal penile color pattern. Methods CP cases reconstructed with CBVMF were reviewed. Preoperative complaints, degree of motivation of the child/parent to surgery, satisfaction of parent/child with results, and surgical complications were described. Results Seven patients (6 months to 6 years old) were treated with CBVMP. Two patients showed megaprepuce and another was submitted to a limited postectomy 3 years before. One family was not fully satisfied (expected “bigger penis”), but acknowledged that the penis was now well exposed. No child talked about the problem preoperatively, but all of the boys were fully satisfied with the results of the surgery and verbalized this in the interviews. Flap edema resolved after 3 months in all but one patient. The flaps assumed the color of penile skin in the medium term. Conclusions CBMVP results were satisfactory. Serious complications did not occur. Flap edema does not persist in the medium term, and redundancy was not a problem. The color of the flap tended to evolve into a pattern similar to the penile skin. All data relevant to the study are included in the article or uploaded as online supplemental information. All data relevant for the study are included in the manuscript.

中文翻译：

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基于冠状沟的腹侧粘膜瓣有助于覆盖严重隐匿阴茎

简介 有许多治疗先天性隐匿性阴茎 (CP) 的技术。皮肤重铺是严重病例中最困难的一步。我们的目标是展示基于冠状沟的三角腹侧粘膜皮瓣 (CBVMF) 治疗青春期前严重 CP 的中期结果，这是一项最近报道的技术。我们的目标是确定结果是否持久，以及该技术是否与持续的粘膜冗余或与永久不等的阴茎颜色模式相关。方法回顾了用 CBVMF 重建的 CP 病例。描述了术前主诉、孩子/父母对手术的积极程度、父母/孩子对结果的满意度以及手术并发症。结果 7 名患者（6 个月至 6 岁）接受了 CBVMP 治疗。两名患者表现出包皮过大，另一名患者在 3 年前接受了有限的术后切除术。一个家庭并不完全满意（期望“更大的阴茎”），但承认阴茎现在暴露得很好。术前没有孩子谈论这个问题，但所有男孩都对手术结果非常满意，并在采访中表达了这一点。皮瓣水肿在 3 个月后除一名患者外全部消退。皮瓣在中期呈现阴茎皮肤的颜色。结论 CBMVP 结果令人满意。没有发生严重的并发症。皮瓣水肿在中期不会持续存在，冗余不是问题。皮瓣的颜色往往会演变成类似于阴茎皮肤的图案。与研究相关的所有数据都包含在文章中或作为在线补充信息上传。