Prolapsed anorectal malignant melanoma presenting as hemorrhoids

Abstract Rectal bleeding in a patient with a history of hemorrhoids should not be ignored. It is often benign and resolves spontaneously without treatment. Here we present a case of anorectal malignant melanoma that presented with rectal bleeding and a prolapsed rectal mass.

[1]  N. Kim,et al.  Malignant Melanoma of Anorectum: Two Case Reports , 2021, Annals of Coloproctology.

[2]  Hina Khan,et al.  Primary Rectal Amelanotic Malignant Melanoma: A Rare Case Report , 2020, Cureus.

[3]  K. Harada,et al.  Nivolumab-induced Adrenal Insufficiency in Patients With Renal Cell Carcinoma , 2019, Journal of immunotherapy.

[4]  L. Morelli,et al.  Anorectal mucosal melanoma , 2018, Oncotarget.

[5]  K. Savage,et al.  Efficacy and Safety of Nivolumab Alone or in Combination With Ipilimumab in Patients With Mucosal Melanoma: A Pooled Analysis. , 2017, Journal of clinical oncology : official journal of the American Society of Clinical Oncology.

[6]  G. M. G. Cruz,et al.  Anorectal melanoma - histopathological and immunohistochemical features and treatment , 2014 .

[7]  Aram Barbaryan,et al.  Primary Anorectal Melanoma , 2014, Case Reports in Oncology.

[8]  C. Tzen,et al.  Characterization of KIT mutation in melanoma , 2014 .

[9]  M. Ross,et al.  Sphincter‐sparing local excision and hypofractionated radiation therapy for anorectal melanoma , 2011, Cancer.

[10]  P. Kelly,et al.  Sphincter-sparing Local Excision and Hypofractionated Radiation Therapy for Anal-rectal Melanoma: A 20 Year Experience , 2010 .

[11]  D. Wan,et al.  Effect of misdiagnosis on the prognosis of anorectal malignant melanoma , 2010, Journal of Cancer Research and Clinical Oncology.

[12]  D. Henne-Bruns,et al.  Anorectal amelanotic melanoma , 2008, Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland.

[13]  J. D. de Wilt,et al.  Melanoma of the Anus Disguised as Hemorrhoids: Surgical Management Illustrated by a Case Report , 2007, Digestive Diseases and Sciences.

[14]  Jian-nong Zhou,et al.  [Diagnosis and treatment of anorectal malignant melanoma--a report of 22 cases with literature review]. , 2006, Ai zheng = Aizheng = Chinese journal of cancer.

[15]  D. Flum,et al.  Wide local excision or abdominoperineal resection as the initial treatment for anorectal melanoma? , 2005, American journal of surgery.

[16]  A. Bokhari,et al.  Anorectal melanoma--3 case reports and a review of the literature. , 2004, Cutis.

[17]  C. Wong,et al.  Anorectal malignant melanoma: treatment with surgery or radiation therapy, or both. , 2003, Canadian journal of surgery. Journal canadien de chirurgie.

[18]  M. Whiteford,et al.  Changing epidemiology of anorectal melanoma , 1999, Diseases of the colon and rectum.