Department of Pathology, SUNY–Stony Brook University Medical Center, NY 11794, USA.
Ann Diagn Pathol. 2011 Apr;15(2):128-30. doi: 10.1016/j.anndiagpath.2010.01.002. Epub 2010 Apr 22.
The blue nevus is a well-described benign melanocytic proliferation that generally occurs on the skin. Infrequently, blue nevi are found on mucosal surfaces. The most common location for mucosal blue nevi is the oral mucosa, with reported cases in the sinonasal mucosa and genital tract, as well as in other locations. To our knowledge, blue nevi of the rectal mucosa have not been described. Here, we describe a case of blue nevus arising in the rectal mucosa. Blue nevi are benign melanocytic proliferations with the potential for malignant transformation and should be included in the differential diagnosis of pigmented mucosal lesions of the rectum.
蓝色痣是一种描述良好的良性黑素细胞增生，通常发生在皮肤上。蓝色痣很少发生在黏膜表面。黏膜蓝色痣最常见的部位是口腔黏膜，也有报道称其发生在鼻腔-鼻窦黏膜和生殖道以及其他部位。据我们所知，直肠黏膜的蓝色痣尚未被描述。在此，我们描述了一例发生在直肠黏膜的蓝色痣。蓝色痣是良性黑素细胞增生，有恶性转化的可能，应纳入直肠色素性黏膜病变的鉴别诊断。
