PMID- 24856853 OWN - NLM STAT- MEDLINE DCOM- 20140922 LR - 20151119 IS - 1532-8392 (Electronic) IS - 0046-8177 (Linking) VI - 45 IP - 8 DP - 2014 Aug TI - Diagnostic utility of NCOA2 fluorescence in situ hybridization and Stat6 immunohistochemistry staining for soft tissue angiofibroma and morphologically similar fibrovascular tumors. PG - 1588-96 LID - S0046-8177(14)00149-X [pii] LID - 10.1016/j.humpath.2013.12.022 [doi] AB - Soft tissue angiofibroma (STA), a recently suggested new histologic entity, is a benign fibrovascular soft tissue tumor composed of bland spindle-shaped tumor cells with abundant collagenous to myxoid stroma and branching small vessels. The lesion has a characteristic AHRR-NCOA2 fusion gene derived from chromosomal translocation of t(5;8)(p15;q13). However, morphologically similar tumors containing abundant fibrovascular and myxoid stroma can complicate diagnosis. We designed an original DNA probe for detecting NCOA2 split signals on fluorescence in situ hybridization (FISH) and estimated its utility with 20 fibrovascular tumors: 4 each of STAs, solitary fibrous tumors (SFTs), and cellular angiofibromas and 3 each of low-grade myxofibrosarcomas, myxoid liposarcomas, and low-grade fibromyxoid sarcomas. We also performed FISH for 13q14 deletion and immunohistochemistry (IHC) staining for estrogen receptor, progesterone receptor, retinoblastoma protein, and MUC-4 expression. Furthermore, IHC for Stat6 was conducted in the 20 cases analyzed by FISH and in an additional 26 SFTs. We found moderate to strong nuclear Stat6 expression in all SFTs but no expression in the other tumors. Both estrogen receptor and progesterone receptor expressions were observed in STAs, SFTs, and cellular angiofibromas. Expression of retinoblastoma protein was found in less than 10% of cells in all tumor types except myxoid liposarcoma. The low-grade fibromyxoid sarcomas were strongly positive for MUC-4. All STAs showed NCOA2 split signals on FISH. All tumors, regardless of histologic type, had 13q14 deletion. The NCOA2 FISH technique is a practical method for confirming STA diagnosis. The combination of NCOA2 FISH and Stat6 IHC proved effective for the differential diagnosis of STA, even when using small biopsy specimens. CI - Copyright (c) 2014 Elsevier Inc. All rights reserved. FAU - Sugita, Shintaro AU - Sugita S AD - Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Aoyama, Tomoyuki AU - Aoyama T AD - Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Kondo, Kei AU - Kondo K AD - Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Keira, Yoshiko AU - Keira Y AD - Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Ogino, Jiro AU - Ogino J AD - Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Nakanishi, Katsuya AU - Nakanishi K AD - Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Kaya, Mitsunori AU - Kaya M AD - Department of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Emori, Makoto AU - Emori M AD - Department of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Tsukahara, Tomohide AU - Tsukahara T AD - Department of Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. FAU - Nakajima, Hisaya AU - Nakajima H AD - Department of Orthopedic Surgery, St Marianna University School of Medicine, Kawasaki 216-8511, Japan. FAU - Takagi, Masayuki AU - Takagi M AD - Department of Diagnostic Pathology, St Marianna University School of Medicine, Kawasaki 216-8511, Japan. FAU - Hasegawa, Tadashi AU - Hasegawa T AD - Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Japan. Electronic address: hasetada@sapmed.ac.jp. LA - eng PT - Journal Article DEP - 20140418 PL - United States TA - Hum Pathol JT - Human pathology JID - 9421547 RN - 0 (Biomarkers, Tumor) RN - 0 (NCOA2 protein, human) RN - 0 (Nuclear Receptor Coactivator 2) RN - 0 (STAT6 Transcription Factor) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Angiofibroma/*diagnosis/genetics/metabolism MH - Biomarkers, Tumor/genetics/*metabolism MH - Chromosome Deletion MH - Chromosomes, Human, Pair 13 MH - Diagnosis, Differential MH - Female MH - Fibrosarcoma/diagnosis/genetics/metabolism MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Liposarcoma, Myxoid/diagnosis/genetics/metabolism MH - Male MH - Middle Aged MH - Nuclear Receptor Coactivator 2/genetics/*metabolism MH - STAT6 Transcription Factor/*metabolism MH - Soft Tissue Neoplasms/*diagnosis/genetics/metabolism MH - Young Adult OTO - NOTNLM OT - Fluorescence in situ hybridization OT - Immunohistochemistry OT - NCOA2 split signal OT - Soft tissue angiofibroma OT - Stat6 EDAT- 2014/05/27 06:00 MHDA- 2014/09/23 06:00 CRDT- 2014/05/27 06:00 PHST- 2013/09/19 00:00 [received] PHST- 2013/12/18 00:00 [revised] PHST- 2013/12/27 00:00 [accepted] PHST- 2014/05/27 06:00 [entrez] PHST- 2014/05/27 06:00 [pubmed] PHST- 2014/09/23 06:00 [medline] AID - S0046-8177(14)00149-X [pii] AID - 10.1016/j.humpath.2013.12.022 [doi] PST - ppublish SO - Hum Pathol. 2014 Aug;45(8):1588-96. doi: 10.1016/j.humpath.2013.12.022. Epub 2014 Apr 18.