These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Pilonidal sinus associated with cellular blue nevus. A previously unrecognized association.
    Author: Val-Bernal JF, González-Vela MC, Hermana S, Garijo MF, González-López MA.
    Journal: J Cutan Pathol; 2007 Dec; 34(12):942-5. PubMed ID: 18001419.
    Abstract:
    A neoplasm associated with a pilonidal sinus (PS) is a rare occurrence in the course of a common disease. Early detection is imperative. To our knowledge, pilonidal disease associated with a cellular blue nevus (CBN) has not been reported. There is a 10% diagnostic error rate with this last lesion. Here we report the case of a 19-year-old man with recurrent sacrococcygeal PS infection associated with an indurated dome-shaped blue-black nodule 1.7 cm in diameter. Clinical diagnosis of the nodule was uncertain suggesting a pigmentary or a vascular tumor. A complete resection of the two lesions was achieved. Pathological study showed a CBN showing a predominantly alveolar pattern associated with a chronic pilonidal disease. The tumor cells showed diffuse strong reactivity for melan-A and HMB-45, and focal reactivity for S-100 protein. Staining for Ki-67 (MIB1) was virtually negative. Differential diagnoses included atypical CBN, borderline melanocytic tumor and malignant melanoma. Radical excision provides a good prognosis for the rare association consisting of a common disease such as PS with the uncommon CBN.
    [Abstract] [Full Text] [Related] [New Search]