Primary malignant melanoma of rectum: A rare case report.

Introduction: Malignant melanoma of the gastrointestinal tract is an extremely rare event of which 50 % occurs in anorectal region. The lesion can easily be misdiagnosed as rectal-carcinoma, which comprises >90 % of rectal tumors and has a different treatment. The behavior of the anorectal melanoma is very aggressive and has very poor prognosis with fatal outcome.

Primary mesenteric hydatid cyst; a rare manifestation of hydatid disease through a case report and literature review.

Introduction And Importance: Hydatidosis, a common zoonotic disease, especially in countries which are poorly developed, is not only capable of affecting a huge number of humans but also animals.

Case Presentation: A 40-year-old female presented to our hospital complaining of the left flank and left upper quadrant pain increasing with exertion for three years. Physical findings revealed a firm lump in the left upper quadrant area extending to the left flank about (15cmx14.

Combined lesion of central giant cell granuloma and ossifying fibroma: A case report of a rare event in oral cavity.

Introduction And Importance: Giant cell granulomas (GCG) and ossifying fibroma (OF) of the jaw are benign reactive lesions. GCG characterized by the presence of abundant multinucleated giant cells in a cellular stroma. On the other hand, the characteristic feature of OF is benign connective tissue replaces the normal bone.