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Anorectal melanoma: a 10-year study in the north-East of iran.

Anvari K, Izadpanahi P, Memar B - Iran J Cancer Prev (2012)

Bottom Line: Anorectal melanoma is one of the rare but significant malignancies of the anorectal area.Rare anorectal melanoma and its similar manifestations to other common anorectal conditions can delay the diagnosis, therefore should be considered as an uncommon differential diagnosis.The disease's outcome is poor and most probably delay in the diagnosis has an important role in the treatment results.

View Article: PubMed Central - PubMed

Affiliation: Cancer Research Center, Omid Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

ABSTRACT

Background: Anorectal melanoma is one of the rare but significant malignancies of the anorectal area. This malignancy currently accounts for 1% of all types of melanoma and less than 1% of all the anorectal area malignancies. Very rare cases of this disease have been reported worldwide.Anorectal melanoma is mostly diagnosed while treating other benign conditions of this area such as hemorrhoids with conventional modalities. Its treatment of choice has always been a controversial issue.

Methods: In this study, clinical pathology and outcome of 7 cases with anorectal melanoma referred to Omid Oncology Teaching Hospital during 2001-2011 were assessed.

Results: Out of seven cases, 2 patients had been diagnosed with hemorrhoids and undergone surgery and 2 other cases had been referred with the primary diagnosis of lymphoma. Initially, only in 3 cases melanoma was diagnosed in clinicopathology setting. Three cases of patients had distant metastases to the liver, lungs, omentum and mesentery, while the other 4 patients had advanced local disease. No patient had been diagnosed in the primary stages of the disease. The mean time duration between symptoms onset to diagnosis of disease had been 8 months. The median survival time was 5 months.

Conclusion: Rare anorectal melanoma and its similar manifestations to other common anorectal conditions can delay the diagnosis, therefore should be considered as an uncommon differential diagnosis. The disease's outcome is poor and most probably delay in the diagnosis has an important role in the treatment results.

No MeSH data available.


Related in: MedlinePlus

Diffuse cytoplasmic staining for S100 marker (IHC, monoclonal Anti-S100, 400×)
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f2-IJCP-05-221: Diffuse cytoplasmic staining for S100 marker (IHC, monoclonal Anti-S100, 400×)

Mentions: A total of 7 case files were retrieved for this study. The median age was 65 years (range 48-74). The mean time between symptoms onset to diagnosis was 8 months. One patient had been referred with complaints of pain in the perineal area and the rest with the chief complaint of rectorrhagia. In two patients, the bulk of diseases were in distal of rectum. In two patients, melanoma had been diagnosed with hemorrhoids and the melanomas were confirmed after surgery and pathology assessment. In our study, two cases had been referred with initial diagnosis of lymphoma which in complementary studies with Immunohistochemistry (IHC) and examining the tissue sample following surgery, the diagnosis of melanoma had confirmed (Figure 1, 2).


Anorectal melanoma: a 10-year study in the north-East of iran.

Anvari K, Izadpanahi P, Memar B - Iran J Cancer Prev (2012)

Diffuse cytoplasmic staining for S100 marker (IHC, monoclonal Anti-S100, 400×)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4209576&req=5

f2-IJCP-05-221: Diffuse cytoplasmic staining for S100 marker (IHC, monoclonal Anti-S100, 400×)
Mentions: A total of 7 case files were retrieved for this study. The median age was 65 years (range 48-74). The mean time between symptoms onset to diagnosis was 8 months. One patient had been referred with complaints of pain in the perineal area and the rest with the chief complaint of rectorrhagia. In two patients, the bulk of diseases were in distal of rectum. In two patients, melanoma had been diagnosed with hemorrhoids and the melanomas were confirmed after surgery and pathology assessment. In our study, two cases had been referred with initial diagnosis of lymphoma which in complementary studies with Immunohistochemistry (IHC) and examining the tissue sample following surgery, the diagnosis of melanoma had confirmed (Figure 1, 2).

Bottom Line: Anorectal melanoma is one of the rare but significant malignancies of the anorectal area.Rare anorectal melanoma and its similar manifestations to other common anorectal conditions can delay the diagnosis, therefore should be considered as an uncommon differential diagnosis.The disease's outcome is poor and most probably delay in the diagnosis has an important role in the treatment results.

View Article: PubMed Central - PubMed

Affiliation: Cancer Research Center, Omid Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

ABSTRACT

Background: Anorectal melanoma is one of the rare but significant malignancies of the anorectal area. This malignancy currently accounts for 1% of all types of melanoma and less than 1% of all the anorectal area malignancies. Very rare cases of this disease have been reported worldwide.Anorectal melanoma is mostly diagnosed while treating other benign conditions of this area such as hemorrhoids with conventional modalities. Its treatment of choice has always been a controversial issue.

Methods: In this study, clinical pathology and outcome of 7 cases with anorectal melanoma referred to Omid Oncology Teaching Hospital during 2001-2011 were assessed.

Results: Out of seven cases, 2 patients had been diagnosed with hemorrhoids and undergone surgery and 2 other cases had been referred with the primary diagnosis of lymphoma. Initially, only in 3 cases melanoma was diagnosed in clinicopathology setting. Three cases of patients had distant metastases to the liver, lungs, omentum and mesentery, while the other 4 patients had advanced local disease. No patient had been diagnosed in the primary stages of the disease. The mean time duration between symptoms onset to diagnosis of disease had been 8 months. The median survival time was 5 months.

Conclusion: Rare anorectal melanoma and its similar manifestations to other common anorectal conditions can delay the diagnosis, therefore should be considered as an uncommon differential diagnosis. The disease's outcome is poor and most probably delay in the diagnosis has an important role in the treatment results.

No MeSH data available.


Related in: MedlinePlus