Background: Distinction between cellular fibrous histiocytomas (FHs) with a deep component and dermatofibrosarcoma protuberans (DFSPs) can pose diagnostic problems. While cases of DFSPs. CD68, CD34, and Factor XIIIa a...Background: Distinction between cellular fibrous histiocytomas (FHs) with a deep component and dermatofibrosarcoma protuberans (DFSPs) can pose diagnostic problems. While cases of DFSPs. CD68, CD34, and Factor XIIIa are helpful in distinguishing between these entities, none are diagnostically absolute. Recent work with CD163, a hemoglobin scavenger receptor, has demonstrated that this marker has high specificity for monocytes, macrophages, and histiocytes. Our goal is to evaluate the utility of CD163 in the diagnosis of dermatofibromas (DFs), cellular FHs, and DFSPs. Methods: Sixty cases including 19 DFs, 23 cellular FHs with a deep component, and 18 DFSPs were tested with antibodies against CD163, CD68, CD34, and Factor XIIIa. Results: CD163 was expressed in 17/19 (89% )- DFs, 23/23 (100% ) cellular FHs, and 3/18 (17% )DFSPs. CD68 was positive in 8/19 (42% ) DFs, 19/23 (83% ) cellular FHs, and 1/16 (6% ) DFSPs. CD34 was expressed in 1/19 (5% ) DFs, 5/23 (22% ) cellular FHs, and 100% of DFSPs. Factor XIIIa labeled 4/19 (21% ) DFs, 11/23 (48% ) cellular FHs, and 0/17 cases of DFSPs. Conclusions: CD163 expression is helpful in distinguishing between cellular FHs and DFSPs and will be useful in a panel of antibodies when these entities are in the differential diagnosis.展开更多
子宫炎性肌纤维母细胞瘤(Inflammatory Myofibroblastic Tumor of the Uterus,UIMT)为子宫间质中度恶性肿瘤,其病因尚未明确,临床上相对罕见。UIMT的临床表现并不特异,诊断主要依靠病理与免疫组化检查。UIMT主要的治疗手段包括手术切除...子宫炎性肌纤维母细胞瘤(Inflammatory Myofibroblastic Tumor of the Uterus,UIMT)为子宫间质中度恶性肿瘤,其病因尚未明确,临床上相对罕见。UIMT的临床表现并不特异,诊断主要依靠病理与免疫组化检查。UIMT主要的治疗手段包括手术切除或药物治疗,而靶向治疗为未来的重点研究方向。本文旨在综述该病的临床特点、诊断与鉴别诊断、治疗与预后,以提高临床对UIMT的认识。展开更多
文摘Background: Distinction between cellular fibrous histiocytomas (FHs) with a deep component and dermatofibrosarcoma protuberans (DFSPs) can pose diagnostic problems. While cases of DFSPs. CD68, CD34, and Factor XIIIa are helpful in distinguishing between these entities, none are diagnostically absolute. Recent work with CD163, a hemoglobin scavenger receptor, has demonstrated that this marker has high specificity for monocytes, macrophages, and histiocytes. Our goal is to evaluate the utility of CD163 in the diagnosis of dermatofibromas (DFs), cellular FHs, and DFSPs. Methods: Sixty cases including 19 DFs, 23 cellular FHs with a deep component, and 18 DFSPs were tested with antibodies against CD163, CD68, CD34, and Factor XIIIa. Results: CD163 was expressed in 17/19 (89% )- DFs, 23/23 (100% ) cellular FHs, and 3/18 (17% )DFSPs. CD68 was positive in 8/19 (42% ) DFs, 19/23 (83% ) cellular FHs, and 1/16 (6% ) DFSPs. CD34 was expressed in 1/19 (5% ) DFs, 5/23 (22% ) cellular FHs, and 100% of DFSPs. Factor XIIIa labeled 4/19 (21% ) DFs, 11/23 (48% ) cellular FHs, and 0/17 cases of DFSPs. Conclusions: CD163 expression is helpful in distinguishing between cellular FHs and DFSPs and will be useful in a panel of antibodies when these entities are in the differential diagnosis.
文摘子宫炎性肌纤维母细胞瘤(Inflammatory Myofibroblastic Tumor of the Uterus,UIMT)为子宫间质中度恶性肿瘤,其病因尚未明确,临床上相对罕见。UIMT的临床表现并不特异,诊断主要依靠病理与免疫组化检查。UIMT主要的治疗手段包括手术切除或药物治疗,而靶向治疗为未来的重点研究方向。本文旨在综述该病的临床特点、诊断与鉴别诊断、治疗与预后,以提高临床对UIMT的认识。