Sentinel lymph node metastasis in anal melanoma: A case report

Huey Y. Tien, Kelly M. McMasters, Michael J. Edwards, Celia Chao

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Anal melanoma represents only 1 % of all melanomas. Owing to delayed diagnosis and early metastasis, the prognosis is uniformly poor. Sentinel lymph node (SLN) biopsy has become the preferred method of nodal staging method for cutaneous melanoma. The role of SLN biopsy for staging of anal melanoma remains unclear. We report a 39-yr-old Caucasian woman who presented with a history of chronic hemorrhoidal pain. She noted a pedunculated peri-anal mass associated with bleeding. Upon biopsy, the lesion was found to be a 6-mm thick primary anal melanoma. There was no evidence of metastatic disease on preoperative imaging studies. She underwent wide local excision of the peri-anal site of the primary melanoma and intraoperative lymphatic mapping with both isosulfan blue and filtered technetium sulfur colloid. With the guidance a lymphoscintigram, ipsilateral inguinal sentinel lymphadenectomy identified five nodes, all of which were both "hot" and blue. One node was found to have a 1-mm metastatic deposit. Subsequently, the patient was treated with adjuvant radiation therapy to the primary site as well as to the superficial and deep inguinal nodal basins. She also received four cycles of biochemotherapy. SLN biopsy appears feasible for staging the superficial inguinal lymph nodes in patients with anal melanoma. However, the impact of SLN biopsy, early detection of occult metastasis, and adjuvant systemic and radiation therapy on the long-term survival of patients with anal melanoma is uncertain.

Original languageEnglish (US)
Pages (from-to)53-56
Number of pages4
JournalInternational Journal of Gastrointestinal Cancer
Volume32
Issue number1
StatePublished - 2002
Externally publishedYes

Fingerprint

Melanoma
Neoplasm Metastasis
Sentinel Lymph Node Biopsy
Groin
Radiotherapy
Technetium Tc 99m Sulfur Colloid
Sentinel Lymph Node
Delayed Diagnosis
Lymph Node Excision
Chronic Pain
Lymph Nodes
Hemorrhage
Biopsy
Skin
Survival

Keywords

  • Anal melanoma
  • Anorectal melanoma
  • Biochemotherapy
  • Sentinel lymph node
  • Sentinel node metastasis

ASJC Scopus subject areas

  • Gastroenterology
  • Endocrinology
  • Oncology

Cite this

Sentinel lymph node metastasis in anal melanoma : A case report. / Tien, Huey Y.; McMasters, Kelly M.; Edwards, Michael J.; Chao, Celia.

In: International Journal of Gastrointestinal Cancer, Vol. 32, No. 1, 2002, p. 53-56.

Research output: Contribution to journalArticle

Tien, Huey Y. ; McMasters, Kelly M. ; Edwards, Michael J. ; Chao, Celia. / Sentinel lymph node metastasis in anal melanoma : A case report. In: International Journal of Gastrointestinal Cancer. 2002 ; Vol. 32, No. 1. pp. 53-56.
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