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而在 Iijima 等 [13] 的个案报道中,患者先使用卡铂加 cient sarcomas[J]. Nat Genet,2015,47(10):1200-1205
紫杉醇同步放化疗,短期消退后发现左股骨转移, [6] NAMBIRAJAN A,DUTTA R,MALIK P S,et al. Cytology
行开放固定手术和局部照射后,行卡铂加依托泊苷 of SMARCA4⁃deficient thoracic neoplasms:comparative
二线治疗,仍出现转移症状,后使用纳武单抗后肿 analysis of SMARCA4⁃deficient non⁃small cell lung carci⁃
nomas and SMARCA4 ⁃ deficient thoracic sarcomas[J].
瘤大小急剧下降到无法检测的水平,且功效到文献
Acta Cytol,2021,65(1):67-74
报道时已维持 22 个月,效果良好。SMARCA4 基因
[7] YOSHIDA A,KOBAYASHI E,KUBO T,et al. Clinico⁃
编码的BRG1蛋白是SWI/SNF的染色质重构复合体
pathological and molecular characterization of SMARCA4
的催化异二聚体一个亚单位,该复合体通过调节转 ⁃deficient thoracic sarcomas with comparison to potential⁃
录并促进细胞分化来发挥肿瘤抑制作用 [14] ,免疫检 ly related entities[J]. Mod Pathol,2017,30(6):797-809
查点抑制剂实施靶向治疗或许对未来治疗 SMAR⁃ [8] PERRET R,CHALABREYSSE L,WATSON S,et al.
CA4缺失的原发性胸部肉瘤具有重要意义。 SMARCA4⁃deficient thoracic sarcomas:clinicopatholog⁃
ic study of 30 cases with an emphasis on their nosology
结合本病例及文献复习,我们发现:①SMAR⁃
CA4 缺失的原发性胸部肉瘤好发于男性吸烟患者, and differential diagnoses[J]. Am J Surg Pathol,2019,43
(4):455-465
临床侵袭性强,进展快,预后差,早期发现预后可。
[9] REKHTMAN N,MONTECALVO J,CHANG J C,et al.
②可通过组织病理学、免疫组织化学或基因检测等
SMARCA4⁃deficient thoracic sarcomatoid tumors repre⁃
确诊。③目前治疗首选根治性手术切除术后综合
sent primarily smoking⁃related undifferentiated carcino⁃
治疗,术前进行充分全面的评估,术后需要定期随 mas rather than primary thoracic sarcomas[J]. J Thorac
访复查,免疫靶向治疗可能是有效治疗 SMARCA4 Oncol,2020,15(2):231-247
缺失的原发性胸部肉瘤的重要手段。 [10] SAUTER J L,GRAHAM R P,LARSEN B T,et al. SMAR⁃
CA4⁃deficient thoracic sarcoma:a distinctive clinicopath⁃
[参考文献]
ological entity with undifferentiated rhabdoid morphology
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胸部肉瘤的临床病理特征[J]. 中华病理学杂志,2019, 1422-1432
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[11]KUNIMASA K,NAKAMURA H,SAKAI K,et al. Patients
[2] 张小伟,黄必飞,陈 艳,等. SMARCA4 缺失的原发性
with SMARCA4 ⁃ deficient thoracic sarcoma and severe
胸部肉瘤 1 例[J]. 中华胸心血管外科杂志,2020,36
skeletal⁃related events[J]. Lung Cancer,2019,132:59-64
(8):505-506 [12] STEWART B D,KAYE F,MACHUCA T,et al. SMAR⁃
[3] NAMBIRAJAN A,SINGH V,BHARDWAJ N,et al. CA4⁃deficient thoracic sarcoma:a case report and review
SMARCA4/BRG1⁃deficient non⁃small cell lung carcino⁃ of literature[J]. Int J Surg Pathol,2020,28(1):102-108
mas:a case series and review of the literature[J]. Arch
[13] IIJIMA Y,SAKAKIBARA R,ISHIZUKA M,et al. Nota⁃
Pathol Lab Med,2021,145(1):90-98 ble response to nivolumab during the treatment of SMAR⁃
[4] SCHOENFELD A J,BANDLAMUDI C,LAVERY J A,et CA4⁃deficient thoracic sarcoma:a case report[J]. Immu⁃
al.The genomic landscape of SMARCA4 alterations and notherapy,2020,12(8):563-569
associations with outcomes in patients with lung cancer [14]WILSON B G,ROBERTS C W. SWI/SNF nucleosome re⁃
[J].Clin Cancer Res,2020,26(21):5701-5708 modellers and cancer[J]. Nat Rev Cancer,2011,11(7):
[5] LE LOARER F,WATSON S,PIERRON G,et al. SMAR⁃ 481-492
CA4 inactivation defines a group of undifferentiated tho⁃ [收稿日期] 2021-05-26
racic malignancies transcriptionally related to BAF⁃defi⁃ (本文编辑:蒋 莉)