Abstract
本文报道CD34阴性表达的前列腺孤立性纤维性肿瘤(solitary fibrous tumor,SFT)1例,并探讨其病理学特点、鉴别诊断及相关治疗。患者男,50岁。前列腺根治标本,低倍镜下见平滑肌组织及前列腺实质中穿插着舌状浸润的肿瘤细胞,镜下显示肿瘤细胞呈梭形、短梭形或束状排列,免疫组织化学标志物仅有平滑肌肌动蛋白显示灶状弱阳性,因判断为间叶源性的恶性肿瘤,但所做的免疫组织化学标志物均为阴性,初次只能先得出一个倾向性诊断,考虑为纤维母细胞/肌纤维母细胞肉瘤。随后二代测序结果显示,NAB2-STAT6基因融合,重新进行STAT6免疫组织化学标志物检测显示为阳性,最终诊断为SFT。CD34阴性的SFT极为罕见,且没有典型SFT的血管外皮细胞瘤样血管结构,极其容易漏诊。需对此种少见SFT类型加强认识,分析其临床病理学特征,并结合临床特征、病理学特点、免疫表型及分子检测明确诊断,以指导治疗。.
MeSH terms
-
Actins / metabolism
-
Antigens, CD34* / metabolism
-
Diagnosis, Differential
-
Humans
-
Immunohistochemistry
-
Male
-
Middle Aged
-
Prostatic Neoplasms* / diagnosis
-
Prostatic Neoplasms* / genetics
-
Prostatic Neoplasms* / metabolism
-
Prostatic Neoplasms* / pathology
-
Repressor Proteins / genetics
-
Repressor Proteins / metabolism
-
STAT6 Transcription Factor* / genetics
-
STAT6 Transcription Factor* / metabolism
-
Solitary Fibrous Tumors* / diagnosis
-
Solitary Fibrous Tumors* / genetics
-
Solitary Fibrous Tumors* / metabolism
-
Solitary Fibrous Tumors* / pathology
Substances
-
Antigens, CD34
-
STAT6 Transcription Factor
-
STAT6 protein, human
-
NAB2 protein, human
-
Repressor Proteins
-
Actins