Schwannoma is a benign neoplasm arising from Schwann cells of the peripheral nerve. It very rarely located in the nasal tip. We report two cases of congenital schwannoma of the nasal columella and discuss the surgical approach of such tumor. Case report: Case 1: An 18 year-old female was referred to us for a very slow growing tumor of the columella. The deformity had been present since the birth. The patient underwent an excision of its tumor using an open rhinoplasty approach. The histological examination revealed a schwannoma. No recurrence was found within 2 years of follow up. Case 2: A 4 month male baby presenting a congenital tumor of his columella. He underwent an excision using open rhinoplasty approach. The histological examination showed a plexiform schwannoma. Discussion: Schwannoma of the nasal tip is a benign tumor that gradually causes aesthetic and functional disorders. Congenital schwannoma of columella is an extremely rare clinical situation. Its diagnosis and treatment can pose certain challenges. The treatment is surgical excision and histological analysis of the specimen. Open rhinoplasty approach provided a good surgical exploration and a good cosmetic result on this nasal tip tumor.

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Introduction : Le dermatofibrosarcome (DFS) de Darrier et Ferrand est une tumeur cutanée rare représentant 0,1 % des tumeurs cutanées malignes. Son traitement reste exclusivement chirurgical. La localisation mammaire est exceptionnelle et délicate. Observation : Femme de 32 ans consultant pour une tumeur cutanée nodulaire du sein droit évoluant depuis cinq ans. Le diagnostic de DFS de Darrier et Ferrand a été suspecté et confirmé par la biopsie. Le traitement a consisté en une exérèse large avec reconstruction. Discussion : La localisation mammaire du DFS de Darrier et Ferrand est rare et délicate puisqu'il s'agit d'un organe d'identité esthétique de la femme, par ailleurs, les marges d'exérèse sont sujets de polémique entre conservateurs et interventionnistes. Mots clés Dermatofibrosarcome de Darrier et Ferrand · Sein · Marges d'exérèsesAbstract Introduction: The dermatofibrosarcoma protuberans (DFP) is a rare skin tumor. It represents 0.1% of the malignant skin tumor. Surgery is its only treatment. The breast involvement is exceptional. Observation: A 32-year-old woman was referred for a right breast nodule lasting for 5 years. The diagnosis of dermatofibrosarcoma protuberans (DFP) was confirmed by biopsy. The treatment was based on a large tumor excision. Discussion: Breast localization of DFP remains rare and is difficult to treat. The breast is a part of women's aesthetic identity. The excision margins remain a debatable subject.

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