Obstet Gynecol Sci.  2018 Nov;61(6):698-701. 10.5468/ogs.2018.61.6.698.

Immunohistochemistry: sole tool in diagnosing a rare case of primary vaginal amelanotic melanoma

• Garg R
• Gupta N

• KMID: 2426015
• DOI: http://doi.org/10.5468/ogs.2018.61.6.698

Abstract

We report a rare case of vaginal amelanotic melanoma. Malignant melanomas are cutaneous and extracutaneous tumors that arise from embryological remnants of neural crest cells/melanocytes. Amelanotic melanomas at such rare locations can be misdiagnosed both clinically and radiologically. Therefore, histopathological examination and immunohistochemistry are mandatory for the diagnosis of these tumors. We diagnosed this case using histopathology and confirmed the diagnosis based on the presence of immunohistochemical markers human melanoma black 45 (HMB45) and S-100.

Keyword

Vagina; Amelanotic melanoma; HMB45; Mucosal melanoma

MeSH Terms

Diagnosis
Humans
Immunohistochemistry*
Melanoma
Melanoma, Amelanotic*
Neural Crest
Vagina