title: Combined myoepithelial carcinoma and myoepithelioma in soft tissue: a case report and review of the literature.
abstract: BACKGROUND
  Soft tissue myoepithelial carcinoma and myoepithelioma are rare entities, part of myoepithelial tumors. They were incorporated into the World Health Organization classification of soft tissue tumors in 2002. Here we present an exceptional case of myoepithelial carcinoma and myoepithelioma association. To the best of our knowledge, such an association has never been reported in the literature.
  
  
  METHODS
  We report a case of myoepithelial carcinoma combined with myoepithelioma occurring in the soft tissue of the right forearm of an 84-year-old Arabian man. We describe the clinical, radiological and pathological features dominated by histological polymorphism. We will also describe the proposed histological criteria of malignancy and the major role of immunohistochemistry in positive and differential diagnosis. We finally mention the therapeutic arsenal available.
  
  
  CONCLUSIONS
  Through this work, we report that myoepithelioma of soft tissue can progress to malignant myoepithelioma.
authors.affiliation: Department of Pathology, Ibn Sina University Hospital, Rabat, Morocco. ysf.mahdi@gmail.com.
authors.forename: Youssef
authors.initials: Y
authors.lastname: Mahdi
authors.forename: Fouad
authors.initials: F
authors.lastname: Zouaidia
authors.forename: Abdelilah
authors.initials: A
authors.lastname: Zouhair
authors.forename: Mohamed
authors.initials: M
authors.lastname: Azouz
authors.forename: Kaoutar
authors.initials: K
authors.lastname: Znati
authors.forename: Ahmed
authors.initials: A
authors.lastname: Jahid
authors.forename: Mohamed Saleh
authors.initials: MS
authors.lastname: Berrada
authors.forename: Zakiya
authors.initials: Z
authors.lastname: Bernoussi
authors.forename: Fatima
authors.initials: F
authors.lastname: Mansouri
authors.forename: Moradh
authors.initials: M
authors.lastname: El Yaacoubi
authors.forename: Najat
authors.initials: N
authors.lastname: Mahassini
mesh_terms: D000369:Aged, 80 and over; D005542:Forearm; D006801:Humans; D008297:Male; D009208:Myoepithelioma / Q000473:pathology* / Q000601:surgery; D012983:Soft Tissue Neoplasms / Q000473:pathology* / Q000601:surgery