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Obo T, Morita K, Sumida Y, Nakazaki-Watadani K, Ikemura M, Yasaka K, Abe O, Takami H, Takayanagi S, Tanaka S, Maki H, Masamoto Y, Miwa A, Kurokawa M. Isolated relapse of plasma cell leukemia in the central nervous systems: a case report and literature review. Int J Hematol 2023:10.1007/s12185-023-03545-7. [PMID: 36735218 DOI: 10.1007/s12185-023-03545-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 02/04/2023]
Abstract
Plasma cell leukemia is a rare yet aggressive form of multiple myeloma characterized by high levels of plasma cells circulating in the peripheral blood. We recently experienced a case of plasma cell leukemia that had been in stringent complete remission for nine years after autologous stem cell transplantations with subsequent courses of lenalidomide maintenance therapy, and then relapsed as an extramedullary plasmacytoma in the central nervous system. Assessment of the bone marrow did not prove proliferation of plasma cells at relapse, but imbalanced elevation of serum levels of free light chains was observed without changes in other clinical biomarkers including immunoglobulin levels. Salvage chemotherapy with isatuximab, pomalidomide, and dexamethasone (IsaPD) was promptly initiated. After two courses of IsaPD, significant remission was achieved and the neuronal symptoms completely resolved. When excessive serum levels of clonotypic free light chains are noted, their significance should be carefully assessed even when plasma cell propagation in the bone marrow is not observed. In such cases, hematologists should search for extramedullary proliferation of plasma cells, including in the immune-privileged central nervous system.
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Affiliation(s)
- Takafumi Obo
- Department of Hematology & Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Ken Morita
- Department of Hematology & Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Yutaro Sumida
- Department of Hematology & Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Kumi Nakazaki-Watadani
- Department of Hematology & Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Masako Ikemura
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Koichiro Yasaka
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Osamu Abe
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hirokazu Takami
- Department of Neurosurgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shunsaku Takayanagi
- Department of Neurosurgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shota Tanaka
- Department of Neurosurgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroaki Maki
- Department of Hematology & Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Yosuke Masamoto
- Department of Hematology & Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Akiyoshi Miwa
- Department of Hematology, Tokyo-Kita Medical Center, Tokyo, Japan
| | - Mineo Kurokawa
- Department of Hematology & Oncology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan.
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Yamashita Y, Tamura S, Oiwa T, Kobata H, Kuriyama K, Mushino T, Murata S, Hosoi H, Nishikawa A, Hanaoka N, Sonoki T. Successful Intrathecal Chemotherapy Combined with Radiotherapy Followed by Pomalidomide and Low-Dose Dexamethasone Maintenance Therapy for a Primary Plasma Cell Leukemia Patient. Hematol Rep 2017; 9:6986. [PMID: 28286633 PMCID: PMC5337827 DOI: 10.4081/hr.2017.6986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 02/03/2017] [Accepted: 02/05/2017] [Indexed: 01/04/2023] Open
Abstract
Primary plasma cell leukemia (PPCL) is a rare aggressive variant of plasma cell disorder and frequently presents with extramedullary disease. Central nervous system (CNS) involvement with PPCL has an extremely poor prognosis. We describe a 46-year-old man with PPCL treated with a combination of lenalidomide, bortezomib, and dexamethasone as induction therapy following upfront allogeneic stem cell transplantation (allo-SCT). Despite achieving a very good partial response, the patient suffered from an isolated CNS relapse 12 months after allo-SCT. He was immediately started on concurrent intrathecal chemotherapy (IT) and cranial irradiation (RT). Subsequently, pomalidomide and low-dose dexamethasone (Pd) were given as maintenance therapy. He has been without CNS recurrence for more than 18 months. Our case suggests that concurrent IT and RT followed by Pd maintenance therapy may be an effective option to control CNS relapse of PPCL after allo-SCT.
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Affiliation(s)
- Yusuke Yamashita
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Shinobu Tamura
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Takehiro Oiwa
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Hiroshi Kobata
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Kodai Kuriyama
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Toshiki Mushino
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Shogo Murata
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Hiroki Hosoi
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Akinori Nishikawa
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Nobuyoshi Hanaoka
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
| | - Takashi Sonoki
- Department of Hematology/Oncology, Wakayama Medical University , Wakayama, Japan
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