Composite Histiocytic Sarcoma and Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma of the Ocular Adnexa

Chenxu Shi; Andrew Lytle; Tatyana Milman; Robert Penne; Adam Bagg

doi:10.1097/IOP.0000000000002670

Composite Histiocytic Sarcoma and Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma of the Ocular Adnexa

Ophthalmic Plast Reconstr Surg. 2024 Apr 11. doi: 10.1097/IOP.0000000000002670. Online ahead of print.

Authors

Chenxu Shi¹, Andrew Lytle², Tatyana Milman^{3

4}, Robert Penne^{3

5}, Adam Bagg¹

Affiliations

¹ Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, U.S.A.
² Centre for Lymphoid Cancer, BC Cancer and Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver, British Columbia, Canada.
³ Department of Ophthalmology Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A.
⁴ Department of Pathology, Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A.
⁵ Department of Oculoplastic and Orbital Surgery, Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A.

PMID: 38624159
DOI: 10.1097/IOP.0000000000002670

Abstract

Histiocytic sarcoma (HS) is a rare and aggressive hematologic neoplasm characterized by the proliferation of malignant histiocytes. It infrequently presents with periorbital involvement. Here we present the first documented case of ocular adnexal histiocytic sarcoma composite with chronic lymphocytic leukemia/small lymphocytic lymphoma and provide compelling evidence for the transdifferentiation of chronic lymphocytic leukemia/small lymphocytic lymphoma to histiocytic sarcoma in an 80-year-old woman. Comprehending the clinicopathological characteristics of histiocytic sarcoma and various other histiocytic proliferations and neoplasms affecting orbital and ocular structures is imperative for ophthalmic surgeons and pathologists.