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KURODA Hajime
Department School of Medicine(Tokyo Women's Medical University Adachi Medical Center), School of Medicine Position Professor |
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| Article types | Original article |
| Language | English |
| Peer review | Peer reviewed |
| Title | Liposarcoma of the pleural cavity. |
| Journal | Formal name：Human pathology Abbreviation：Hum Pathol ISSN code：15328392/00468177 |
| Domestic / Foregin | Foregin |
| Volume, Issue, Page | 136,pp.105-113 |
| Author and coauthor | Kawai Toshiaki, Nakashima Hiroshi, Washimi Kota, Yokose Tomoyuki, Matsuo Toshihiro, Nakayama Masamichi, Shinohara Naohiro, Kuroda Hajime, Ishida Kazuyuki, Akiba Jun, Ishikawa Masashi, Urabe Shogo, Shiraishi Junichi, Shiraishi Takeshi, Sakamoto Atsuhiko, Matsukuma Susumu |
| Publication date | 2023/06 |
| Summary | Liposarcoma rarely occurs in the pleura or thoracic cavity, and few reports appear in the literature. We hypothesized that combining clinicopathologic, immunohistochemical, and fluorescence in situ hybridization methods would allow definite diagnoses. Using formalin-fixed, paraffin-embedded blocks, we examined 6 atypical lipomatous tumor/well-differentiated liposarcomas (ALT/WDLPS), 5 dedifferentiated liposarcomas (DDLPSs), 2 pleomorphic liposarcomas, and 1 myxoid liposarcoma (MLPS). We used the Kaplan-Meier method and the Wilcoxon test for survival analysis for prognostic factor evaluation. Histologically, ALT/WDLPS was composed of a relatively mature adipocytic proliferation, accompanied by some lipoblasts. DDLPS exhibited round-to-oval tumor cells with a high nucleus-to-cytoplasm ratio that had proliferated in nests, accompanied in case 10 by some giant cells but no fatty cells. The pleomorphic type contained a varying proportion of pleomorphic lipoblasts. MLPS displayed uniform round- to oval-shaped cells and small signet-ring lipoblasts in a myxoid stroma. Immunohistochemically, 11 (79%), 11 (79%), and 10 (71%) of 14 cases were positive for S-100, p16, and CDK4, respectively. Six of the 14 cases (43%) were positive for MDM2 and adipophilin. One case of ALT/WDLPS and 3 cases of DDLPS exhibited MDM2 amplification by fluorescence in situ hybridization (Vysis LSI MDM2 SpectrumGreen Probe plus Vysis CEP 12 SpectrumOrange probe). ALT/WDLPS was the most favorable type for survival, while adipophilin tended to be a negative prognostic factor for pleural liposarcoma. For a firm diagnosis of liposarcoma in the pleura, immunohistochemistry for CDK4, MDM2, and adipophilin together with MDM2 gene amplification by fluorescence in situ hybridization may be an important diagnostic tool. |
| DOI | 10.1016/j.humpath.2023.03.009 |
| PMID | 37023867 |