PMID- 26178751 OWN - NLM STAT- MEDLINE DCOM- 20160310 LR - 20181202 IS - 1746-1596 (Electronic) IS - 1746-1596 (Linking) VI - 10 DP - 2015 Jul 16 TI - Pulmonary epithelioid inflammatory myofibroblastic sarcoma with multiple bone metastases: case report and review of literature. PG - 106 LID - 10.1186/s13000-015-0358-1 [doi] LID - 106 AB - Epithelioid inflammatory myofibroblastic sarcoma (EIMS) is a rare variant of inflammatory myofibroblastic tumor with distinctive morphological features and malignant clinical behavior. Only a few such cases have been described in the literature. We report here a case of unusual pulmonary EIMS with multiple bone metastases. A 21-year-old Chinese male patient presented with complaints of general fatigue and rapid weight loss, and a huge tumor arising in the left lower lobe of lung was detected by chest computed tomography. The mass of lung was totally resected. Microscopically, the tumor cells were rounded and epithelioid in shape. Myxoid stroma and inflammatory infiltration was also present. The tumor cells were immunopositive to anaplastic lymphoma kinase (ALK) in smooth cytoplasmic pattern. Fluorescence in situ hybridization (FISH) assay revealed the presence of rearrangement of ALK gene. Three months after lung surgery, there were multiple bone metastases and intraspinal mass found by positron emission tomography. The second surgical treatment was performed to remove the intraspinal lesion. The histological and immunohistochemical features of intraspinal mass were similar to those of pulmonary tumor. The diagnosis of pulmonary EIMS with multiple bone metastases was made. To the best of our knowledge, it may be the first case of an EIMS arising in lung. Awareness of EIMS in respiratory tract and its distinctive features is important for pathologists to avoid a diagnostic pitfall caused by histologic similarities to other ALK-positive tumors. ALK inhibitor is a promising treatment for this aggressive tumor regardless of its potential acquired resistance. FAU - Fu, Xinge AU - Fu X AD - Department of Pathology, The First Affiliated Hospital, Guangzhou Medical University, 151, Yanjiang Road, Guangzhou, 510120, China. FAU - Jiang, Juhong AU - Jiang J AD - Department of Pathology, The First Affiliated Hospital, Guangzhou Medical University, 151, Yanjiang Road, Guangzhou, 510120, China. FAU - Tian, Xiao-ying AU - Tian XY AD - School of Chinese Medicine, Hong Kong Baptist University, 7, Baptist University Road, Kowloon Tong, Hong Kong, China. FAU - Li, Zhi AU - Li Z AD - Department of Pathology, The First Affiliated Hospital, Sun Yat-sen University, 58, Zhongshan Road II, Guangzhou, 510080, China. lizhi@mail.sysu.edu.cn. LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20150716 PL - England TA - Diagn Pathol JT - Diagnostic pathology JID - 101251558 RN - 0 (Biomarkers, Tumor) RN - EC 2.7.10.1 (ALK protein, human) RN - EC 2.7.10.1 (Anaplastic Lymphoma Kinase) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) SB - IM MH - Anaplastic Lymphoma Kinase MH - Biomarkers, Tumor/analysis/genetics MH - Bone Neoplasms/chemistry/genetics/*secondary/surgery MH - Epithelioid Cells/chemistry/*pathology MH - Fatal Outcome MH - Gene Rearrangement MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Lung Neoplasms/chemistry/genetics/*pathology/surgery MH - Male MH - Myofibroblasts/chemistry/*pathology MH - Pneumonectomy MH - Positron-Emission Tomography MH - Receptor Protein-Tyrosine Kinases/genetics MH - Reoperation MH - Sarcoma/chemistry/genetics/*secondary/surgery MH - Time Factors MH - Tomography, X-Ray Computed MH - Treatment Outcome MH - Young Adult PMC - PMC4504132 EDAT- 2015/07/17 06:00 MHDA- 2016/03/11 06:00 PMCR- 2015/07/16 CRDT- 2015/07/17 06:00 PHST- 2015/04/28 00:00 [received] PHST- 2015/07/09 00:00 [accepted] PHST- 2015/07/17 06:00 [entrez] PHST- 2015/07/17 06:00 [pubmed] PHST- 2016/03/11 06:00 [medline] PHST- 2015/07/16 00:00 [pmc-release] AID - 10.1186/s13000-015-0358-1 [pii] AID - 358 [pii] AID - 10.1186/s13000-015-0358-1 [doi] PST - epublish SO - Diagn Pathol. 2015 Jul 16;10:106. doi: 10.1186/s13000-015-0358-1.