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Skin tumor is the most intriguing topic for the clinicians. This chapter covers a wide range of issues and provides with informative clues and tips associated with clinical features and pathological presentations and keeps pace with the latest development in molecular biology and immunohistochemistry to assist the readers in the establishment of accurate diagnosis. These following disorders are elaborately selected and arranged from a histopathological perspective.

This paper presents the experience in using the reverse buccinator musculomucosal flap for repairing the defect following excising inverted papilloma of the nose.After the inverted papilloma of the nose was excised through an endonasal approach, the reverse buccinator musculomucosal flap supplied by the retrograde blood flow of the anterior buccal artery was harvested and sutured to the defect through the ora-nasal tunnel. The procedure was performed on three patients.The postoperative course was uneventful. All the flaps survived completely.The technique provides the solution to prevent nasal stricture from cicatricial contracture after excising inverted papilloma. In the operation, excising the inverted papilloma and repairing the defect was performed simultaneously, saving another operation for the secondary deformity. The technique is also applicable to the treatment of existing cicatricial stricture of the nose.