PMID- 33396985 OWN - NLM STAT- MEDLINE DCOM- 20210106 LR - 20210106 IS - 0529-5807 (Print) IS - 0529-5807 (Linking) VI - 50 IP - 1 DP - 2021 Jan 8 TI - [Clinicopathological characteristics of pulmonary artery intimal sarcoma]. PG - 38-43 LID - 10.3760/cma.j.cn112151-20200413-00313 [doi] AB - Objective: To describe the clinicopathological features of pulmonary artery intimal sarcoma (PAIS), and to understand its molecular alterations. Methods: Sixty cases of pulmonary artery endarterectomy performed at the China-Japan Friendship Hospital, Beijing, China from January 2017 to January 2020 were reviewed. Clinical data of 5 patients with pulmonary artery intimal sarcoma were collected. Hematoxylin-eosin staining, immunohistochemistry staining and fluorescence in situ hybridization (FISH) were performed to evaluate the pathological features. RNA sequencing was conducted to assess the fusion gene changes in PAIS. Results: The detection rate of PAIS was 8.3% (5/60), with the median age of 49 years and a female predominance. Their clinical manifestations were non-specific. Histopathological examination showed that the tumors were composed of malignant spindle or epithelioid cells, with various degrees of atypia. Focal heterologous osteosarcomatous or leiomyosarcomatous differentiation was noted. The tumor cells could express PDGFRA, CDK4 and MDM2 with co-amplification of MDM2, CDK4 and EGFR genes. RNA sequencing detected multiple in-frame fusions in the tumors. Conclusions: PAIS is a rare, highly heterogeneous, and poorly-or un-differentiated sarcoma accompanied by complex changes of multiple genes.It has no known effective treatments, and thus has a poor prognosis. FAU - Wang, B AU - Wang B AD - Department of Pathology, China-Japan Friendship Hospital, Beijing 100029, China. FAU - Zhang, T AU - Zhang T AD - Department of Pathology, China-Japan Friendship Hospital, Beijing 100029, China. FAU - Liu, H Y AU - Liu HY AD - Department of Pathology, China-Japan Friendship Hospital, Beijing 100029, China. FAU - Chen, R R AU - Chen RR AD - Geneplus-Beijing Ltd., Beijing 102206, China. FAU - Zhang, X Y AU - Zhang XY AD - Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China. FAU - Zhang, H L AU - Zhang HL AD - Department of Pathology, China-Japan Friendship Hospital, Beijing 100029, China. FAU - Zhai, Z G AU - Zhai ZG AD - Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China. FAU - Zhong, D R AU - Zhong DR AD - Department of Pathology, China-Japan Friendship Hospital, Beijing 100029, China. LA - chi PT - Journal Article PL - China TA - Zhonghua Bing Li Xue Za Zhi JT - Zhonghua bing li xue za zhi = Chinese journal of pathology JID - 0005331 RN - 0 (Biomarkers, Tumor) SB - IM MH - Biomarkers, Tumor MH - China MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Middle Aged MH - Pulmonary Artery/surgery MH - *Sarcoma/genetics/surgery MH - *Vascular Neoplasms/genetics/surgery OTO - NOTNLM OT - Gene amplification OT - Gene rearrangement OT - Hemangiosarcoma OT - Pulmonary artery OT - Tunica intima EDAT- 2021/01/06 06:00 MHDA- 2021/01/07 06:00 CRDT- 2021/01/05 02:30 PHST- 2021/01/05 02:30 [entrez] PHST- 2021/01/06 06:00 [pubmed] PHST- 2021/01/07 06:00 [medline] AID - 10.3760/cma.j.cn112151-20200413-00313 [doi] PST - ppublish SO - Zhonghua Bing Li Xue Za Zhi. 2021 Jan 8;50(1):38-43. doi: 10.3760/cma.j.cn112151-20200413-00313.