Melanoma analdiagnóstico infrecuente en la patología anorrectal

  1. P. Dabán-López 1
  2. T. Gallart-Aragón 1
  3. C. Pérez-Gómez 1
  4. E. Dabán-Collado 1
  5. B. Mirón-Pozo 1
  1. 1 Hospital Clínico Universitario San Cecilio. Granada.
Revista:
Cirugía Andaluza

ISSN: 2695-3811 1130-3212

Ano de publicación: 2018

Volume: 29

Número: 4

Páxinas: 537-540

Tipo: Artigo

Outras publicacións en: Cirugía Andaluza

Resumo

Introduction: incidence of anorectal localization of melanoma does not exceed 2% of all melanoma cases. Prognosis of this anorectal pathology, frequently underdiagnosed or diagnosed with remarkable delay, is very poor and depends to a large extent on local -and regional- stage and distant metastasis. Clinic case: a 31-year-old woman was first attended to in Urgent Care for a rectal bleeding episode, which was diagnosed and treated like a hemorrhoid crisis. Due to the persistence of these symptoms, this patient was received again in our hospital and a general surgeon assessed her, certifying a pigmented perianal lesion. Once the study was completed, anatomopathological diagnosis concluded that it was an anal melanoma with a negative extension study. In collaboration with Dermatology and Medical Oncology services, local excision and selective lymph node biopsy were carried out, with negative results. The patient is being treated with interferon, with reviews every six months. Conclusions and discussion: due to the low incidence of anorectal melanoma, prognostic factors have not yet been defined and conclusions differ between study groups. All agree, though, that surgery is the standard treatment in cases of anorectal melanoma, improving the prognosis for patients without distant metastasis. Currently, the conflict concerns whether to undergo a conservative surgery with subsequent monitoring and eventual rescue surgery, or to opt for a more radical surgery at the outset. According to the reviewed articles, the type of surgery does not affect overall survival, but local excision appears preferred by the scientific community.

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