title: Superficial angiomyxoma of the thumb mimicking a malignant bone tumor: case report.
abstract: Superficial angiomyxoma is a distinctive cutaneous soft tissue neoplasm commonly involving dermal and subcutaneous tissues and showing a prominent angiomyxoid matrix interspersed with numerous blood vessels. We report a case of superficial angiomyxoma in a 70-year-old man who presented with a fungating swelling on the distal phalanx of the thumb mimicking a malignant tumor. The diagnosis of superficial angiomyxoma was made based on histopathology and immunohistochemistry. We report this lesion because of its rare presentation with extensive distal phalangeal osteolysis mimicking a malignant bone tumor.
authors.affiliation: Hand and Microsurgery Unit, Department of Orthopaedics, Kasturba Medical College Hospital, Manipal University, Manipal, India; Department of Pathology, Kasturba Medical College Hospital, Manipal University, Manipal, India.
authors.forename: Anil K
authors.initials: AK
authors.lastname: Bhat
authors.affiliation: Hand and Microsurgery Unit, Department of Orthopaedics, Kasturba Medical College Hospital, Manipal University, Manipal, India; Department of Pathology, Kasturba Medical College Hospital, Manipal University, Manipal, India. Electronic address: anmacharya@gmail.com.
authors.forename: Ashwath M
authors.initials: AM
authors.lastname: Acharya
authors.affiliation: Hand and Microsurgery Unit, Department of Orthopaedics, Kasturba Medical College Hospital, Manipal University, Manipal, India; Department of Pathology, Kasturba Medical College Hospital, Manipal University, Manipal, India.
authors.forename: Prashant
authors.initials: P
authors.lastname: Rosario
authors.affiliation: Hand and Microsurgery Unit, Department of Orthopaedics, Kasturba Medical College Hospital, Manipal University, Manipal, India; Department of Pathology, Kasturba Medical College Hospital, Manipal University, Manipal, India.
authors.forename: C K
authors.initials: CK
authors.lastname: Anuradha
authors.affiliation: Hand and Microsurgery Unit, Department of Orthopaedics, Kasturba Medical College Hospital, Manipal University, Manipal, India; Department of Pathology, Kasturba Medical College Hospital, Manipal University, Manipal, India.
authors.forename: Lakshmi
authors.initials: L
authors.lastname: Rao
mesh_terms: D000368:Aged; D001859:Bone Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009232:Myxoma / Q000175:diagnosis* / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013933:Thumb
keywords: Thumb tumor; angiomyxoma; lytic lesion