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The middle and distal part of the nose has multiple well-defined cosmetic units with a distinct outline, color, consistency, sebaceous content, texture and function. Crossing these units with surgical incisions can lead to a more visible scar. Here we will deal with the case of an 84-year-old patient with basal cell carcinoma of the junction between the dorsum and the alar of the nose and the management of the resulting loss of surgical substance with the Marchac flap. This frontal flap described by Marchac is an axial flap based on a vascular pedicle emerging near the inner palpebral ligament, allowing coverage of the loss of substance while respecting the nasal subunits and less thickness difference is present.