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Case Reports in Pathology
Volume 2016, Article ID 7289017, 4 pages
Case Report

Dendritic Fibromyxolipoma of the Pyriform Sinus: A Case Report and Review of the Literature

1Section of Pathology, Department of Biomedical Sciences, College of Medicine, King Faisal University, Al-Ahsa, Saudi Arabia
2Section of Anatomic Pathology, Department of Pathology and Laboratory Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia

Received 7 October 2016; Accepted 28 November 2016

Academic Editor: Yoh Dobashi

Copyright © 2016 Abdulrahim AlAbdulsalam and Maha Arafah. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Dendritic fibromyxolipoma is a rare and distinctive soft tissue neoplasm that is considered by many authors as a variant of spindle cell lipoma and characterized by the presence of dendritic cytoplasmic processes, plexiform vascular pattern, and keloidal collagen. It has never been reported in the larynx and hypopharynx. Its rarity and the potential to mistake it as a more clinically aggressive myxoid soft tissue neoplasm highlight the importance of its recognition. Here, a case of a dendritic fibromyxolipoma of the pyriform sinus in a 38-year-old male who presented with dysphagia, change of voice, and stridor is reported. A review of the literature, including histopathologic features and differential diagnosis, is also included.