HighlightsA very rare type of retroperineal malignant cyst tumor is presented on two cases.A very rare type of Mesothelioma tumor is presented on two cases.A minimal invasive type of treatment is proposed instead of the regular open surgery.A small literature review was performed.

HighlightsA rare type of retroperineal malignant tumour is presented.The treatment approach is on debate, the role for the pre operative embolization is not clear.A small literature review was performed.

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