1
|
Magara K, Takasawa A, Kikuchi K, Sugawara T, Murakami T, Kyuno D, Ono Y, Takasawa K, Numata Y, Sasaki S, Nakase H, Hasegawa T, Osanai M. A novel approach to diagnosing crystal-storing histiocytosis: utility of scanning electron microscopy for formalin-fixed paraffin-embedded tissue specimens. Med Mol Morphol 2023; 56:297-302. [PMID: 37400727 DOI: 10.1007/s00795-023-00363-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 06/19/2023] [Indexed: 07/05/2023]
Abstract
Crystal-storing histiocytosis (CSH) is a rare disorder that shows infiltration of histiocytes with an aberrant cytoplasmic accumulation of crystalline structures and is often accompanied by lymphoproliferative-plasma cell disorders (LP-PCD) as background diseases. The diagnosis of CSH requires identification of crystalline structures that accumulate in the infiltrating histiocytes, which may be challenging by optical microscopy alone. In this case report, we describe an atypical course of systemic CSH with multifocal fibrosclerosis of an unknown background disease that was diagnosed by ultrastructural observation, including transmission electron microscopy (TEM) and scanning electron microscopy (SEM), in pathological autopsy. In addition, crystalline structures were successfully identified by scanning electron microscopic observations using formalin-fixed and paraffin-embedded (FFPE) tissue from biopsy specimens taken before death. Since CSH was identified by SEM in a tiny biopsy specimen, observation of histiocytic infiltrative lesions by SEM using FFPE tissue may lead to early detection of and initiation of treatment for CSH.
Collapse
Affiliation(s)
- Kazufumi Magara
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-Ku, Sapporo, 060-8556, Japan
| | - Akira Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-Ku, Sapporo, 060-8556, Japan.
| | - Keisuke Kikuchi
- Department of Pathology, Obihiro Kosei General Hospital, Obihiro, Japan
| | - Taro Sugawara
- Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Taro Murakami
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-Ku, Sapporo, 060-8556, Japan
| | - Daisuke Kyuno
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-Ku, Sapporo, 060-8556, Japan
| | - Yusuke Ono
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-Ku, Sapporo, 060-8556, Japan
| | - Kumi Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-Ku, Sapporo, 060-8556, Japan
| | - Yasunao Numata
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Shigeru Sasaki
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hiroshi Nakase
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tadashi Hasegawa
- Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Makoto Osanai
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-Ku, Sapporo, 060-8556, Japan
| |
Collapse
|