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Primary anorectal melanoma is very rare. The incidence is 1-3% of all anorectal malignancies. Most of these cases occur between the fifth to sixth decade of life. The tumor has very high metastasic potential. Metastasis of anorectal melanoma to breast is very rare. Only few cases are reported in literature. The rarity of this case has prompted us to present this case. The rectal mass on histopathology examination was a malignant melanoma. The tumor was invading the muscularis propria. On Immunochemistry, the tumor was positive for s100 and Malan A and negative for HMB 45, CK and LCA. She was asymptomatic for 6 months post operatively when she noticed a painless, small lump in the left breast. The lump gradually increased in size. On examination, a lump was present in upper and inner quadrant of left breast measuring around 6×5×4 cm. The lump was not fixed to the underlying structures. The external surface of lump was bosselated and consistency was varying from soft, firm to hard.
Citation: Joshi AR, Bavikar RR, Khande T (2014) Metastasis of Rare Tumor at an Usual Site-A Case Report. J Cytol Histol 5:280.