title: Cutaneous Rosai-Dorfman Disease presenting as a flank swelling.
abstract: Rosai-Dorfman disease (RDD) is primarily a disease of lymph nodes caused by accumulation of excessive histiocytes. The extra-nodal sites are simultaneously involved in almost half the cases. However, presentation with isolated extra-nodal sites is uncommon and disease confined to skin and soft tissues is a rare entity. We report RDD in a 33 year old man who presented as a flank mass and was a diagnostic challenge for the surgical team. This case report strengthens the evidence that RDD should be added to the list of rare causes of skin and soft tissue swellings and informs how to manage such patients.
authors.affiliation: Professor of Surgery and Consultant General & Laparoscopic Surgeon, Department of Surgery, College of Medicine, King Saud University, Head University Surgical Unit, King Saud Medical City, King Saud University, Riyadh, KSA.
authors.forename: Saleh M
authors.initials: SM
authors.lastname: AlSalamah
authors.affiliation: Senior Registrar, Department of Surgery, College of Medicine, King Saud University, University Surgical Unit, King Saud Medical City, Riyadh, KSA.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Abdullah
authors.affiliation: Resident in Dept. of Surgery, King Saud Medical City, Riyadh, KSA.
authors.forename: Reem Abdullah
authors.initials: RA
authors.lastname: AlSalamah
authors.affiliation: Consultant Dermatologist, Department of Dermatology, King Saud Medical City, Riyadh, KSA.
authors.forename: Abdul Rehman Abdullah
authors.initials: AR
authors.lastname: Al Hadlaq
authors.affiliation: Rotating Senior Registrar Family Medicine, Al Qassim University, King Saud Medical City, Riyadh, KSA.
authors.forename: EbtehalSulaiman
authors.initials: E
authors.lastname: Al Mogbel
authors.affiliation: Registrar in Dept. General Surgery, King Saud Medical City, Riyadh, KSA.
authors.forename: Ghadah Mohammed
authors.initials: GM
authors.lastname: Al Yahya
keywords: Extranodular Rosai-Dorfman Disease; Rosai-Dorfman Disease; Sinus Histiocytosis with massive lymphadenopathy