• Gregor Hutter, Silvia Hofer, Alexandar Tzankov, and Karl F Kothbauer.
• Divisions of *Neurosurgery and ‡Oncology, Luzerner Kantonsspital, Luzern, Switzerland; §Pathology Department, Universitätsspital Basel, Basel, Switzerland; ¶Division of Neurosurgery, University of Basel, Basel, Switzerland.
• Neurosurgery. 2015 Dec 1; 77 (6): E979-83.

Background And ImportanceThis is the first report of a primarily intracranial interdigitating dendritic cell sarcoma (IDCS).Clinical PresentationA 39-year-old patient with right hemiparesis underwent complete resection of a large parafalcine tumor with subsequent complete recovery of neurological symptoms. Histologically, the tumor was diagnosed as IDCS. Extensive staging did not reveal any extracranial manifestation of this disease. After 1.5 years, the patient remains recurrence free and is being observed closely.ConclusionIDCS are exceedingly rare tumors and so far have not been found intracranially. On the basis of the limited experience with extracranial occurrence, this tumor is best managed by complete resection and careful oncological observation.AbbreviationsFDCS, follicular dendritic cell sarcomaIDCS, interdigitating dendritic cell sarcomaRTU, ready-to-use kit.

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