Gynecologic oncology reports · 2025
Radical resection and sentinel lymph node evaluation of mammary-like adenocarcinoma of the vulva (MLAV) with somatic BRCA1 mutation.
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Markel Lilla, Rivera Lidys, Ordobazari A, Hakam Ardeshir, Lorenzo Wilfredo, Hoffman Mitchel S, Wenham Robert M, Avila Monica
Аннотация
BACKGROUND: Mammary-like gland adenocarcinoma of the vulva is a rare and aggressive form of vulvar cancer with histopathologic resemblance to breast cancer. This rare type of vulvar cancer develops from primary metaplasia of mammary-like anogenital glands, more recently discovered anatomic components of the anogenital region.
CASE PRESENTATION: We present a 77-year-old African-American female with a six-month history of painless, left lower vulvar lesion referred to our cancer center following confirmatory biopsy of invasive mammary type adenocarcinoma. Preoperative PET CT demonstrating focal avidity (SUV 7.8) in the vulvar region with no evidence of metastatic disease. She underwent exam under anesthesia, left radical vulvar excision with primary closure, left inguinal sentinel lymph node mapping and biopsy for a TNM stage of T2N0M0 and vulvar FIGO stage IB grade 2. Somatic testing was significant for a BRCA1 mutation (variant p.S770, c.2309C>G).
CONCLUSION: Mammary-like gland adenocarcinoma of the vulva is a rare but aggressive neoplasm that presents diagnostic challenges due to its resemblance to breast carcinoma. Radical resection and sentinel lymph node assessment is feasible. Melanocytic skin types pose a unique set of differences regarding detection, diagnosis and potential genomic variations such as BRCA1 mutation in our patient. Genetic and genomic assessments should be considered to further guide optimal therapeutic options.
CASE PRESENTATION: We present a 77-year-old African-American female with a six-month history of painless, left lower vulvar lesion referred to our cancer center following confirmatory biopsy of invasive mammary type adenocarcinoma. Preoperative PET CT demonstrating focal avidity (SUV 7.8) in the vulvar region with no evidence of metastatic disease. She underwent exam under anesthesia, left radical vulvar excision with primary closure, left inguinal sentinel lymph node mapping and biopsy for a TNM stage of T2N0M0 and vulvar FIGO stage IB grade 2. Somatic testing was significant for a BRCA1 mutation (variant p.S770, c.2309C>G).
CONCLUSION: Mammary-like gland adenocarcinoma of the vulva is a rare but aggressive neoplasm that presents diagnostic challenges due to its resemblance to breast carcinoma. Radical resection and sentinel lymph node assessment is feasible. Melanocytic skin types pose a unique set of differences regarding detection, diagnosis and potential genomic variations such as BRCA1 mutation in our patient. Genetic and genomic assessments should be considered to further guide optimal therapeutic options.