109年:醫學六(2)

原發性的陰道癌( vaginal cancer ),並不多見,最常發生在陰道的那個部位?

A上三分之一的陰道後壁( upper one-third of the vagina on the posterior wall )
B上三分之一的陰道前壁( upper one-third of the vagina on the anterior wall )
C下三分之一的陰道後壁( lower one-third of the vagina on the posterior wall )
D下三分之一的陰道前壁( lower one-third of the vagina on the anterior wall )

詳細解析

本題觀念:

本題探討原發性陰道癌(primary vaginal cancer)的好發部位。陰道可分為上、中、下三等份,各自具備不同的解剖與淋巴引流特性。了解原發性惡性腫瘤最常發生的位置,有助於臨床檢查、影像學判讀及治療計畫的擬定。

選項分析

  • 選項A:上三分之一的陰道後壁(upper one-third of the vagina on the posterior wall)
    多數文獻報告,原發性陰道癌最常發生於陰道上1/3的後壁。ObGyn Key指出「Primary vaginal malignancies are most commonly located in the upper third of the vagina and on the posterior wall」(obgynkey.com);AMBOSS也明確寫到:「Localization: The upper third of the posterior vaginal wall is the most common site of vaginal carcinoma」([amboss.com](https://www.amboss.com/us/knowledge/

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