Blue nevus of the colorectal mucosa.

Ann Diagn Pathol 2011 Apr 22;15(2):128-30. Epub 2010 Apr 22.

Department of Pathology, SUNY–Stony Brook University Medical Center, NY 11794, USA.

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.

Download full-text PDF

Source Listing
April 2011
Save 15% Survey

Similar Publications

Rectal blue nevus: Case report of a rare entity and literature review.

Pathol Res Pract 2015 Aug 25;211(8):625-7. Epub 2015 Apr 25.

Division of Gastroenterology, Bronx Lebanon Hospital Center, Albert Einstein College of Medicine of Yeshiva University, 1650 Grand Concourse, Bronx, NY 10457, United States; Department of Medicine, Bronx Lebanon Hospital Center, Albert Einstein College of Medicine of Yeshiva University, 1650 Grand Concourse, Bronx, NY 10457, United States.

Blue nevus, a pigmented skin lesion, affects the dermal melanocytes that are rich in melanin. Its occurrence on skin has been well described in literature. Less commonly, involvement of mucosal surfaces especially genitourinary tract has also been noticed. Read More

View Article and Full-Text PDF
August 2015

Blue nevi of the sinonasal mucosa: a report of two cases and review of the literature.

Laryngoscope 2007 Feb;117(2):371-2

Department of Pathology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.

Blue nevi are uncommon melanocytic proliferations. They occur mostly in the skin and occasionally in mucosae. Blue nevi of the sinonasal mucosa are extremely rare with only two cases reported to date. Read More

View Article and Full-Text PDF
February 2007

Atypical cellular blue nevi (cellular blue nevi with atypical features): lack of consensus for diagnosis and distinction from cellular blue nevi and malignant melanoma ("malignant blue nevus").

Am J Surg Pathol 2008 Jan;32(1):36-44

Department of Dermatology, University of Miami Miller School of Medicine, Miami, FL, USA.

The distinction of cellular blue nevi (CBN) with atypical features ["atypical" CBN (ACBN)] from conventional CBN and malignant melanomas related to or derived from CBN remains a difficult problem. Here, we report on the diagnosis of various cellular blue melanocytic neoplasms by 14 dermatopathologists who routinely examine melanocytic lesions. Three parameters were assessed: (1) for between rater analyses, we calculated interobserver agreement by the kappa statistic (regardless of whether the diagnosis was correct). Read More

View Article and Full-Text PDF
January 2008

Blue nevi and related tumors.

Clin Lab Med 2011 Jun;31(2):345-58

Department of Pathology, Tufts Medical Center, Tufts University, Boston, MA 02111, USA.

Blue nevi and related lesions are characterized by the proliferation of dermal dendritic melanocytes. Although they share certain common clinical and histologic features, they encompass a spectrum of lesions ranging from benign melanocytic hamartomas and common blue nevi to borderline malignant pigmented epithelioid melanocytoma and aggressive malignant blue nevi. This article succinctly describes the common dermal dendritic proliferations and updates readers on newly classified entities and variants. Read More

View Article and Full-Text PDF
June 2011