title: Diarrhea as initial manifestation of pulmonary artery intimal sarcoma: a case report and literature review.
abstract: Pulmonary artery intimal sarcoma (PAIS) is a rare malignant tumor that presents with nonspecific symptoms and may be misdiagnosed as thromboembolic disease. We report a case of a 40-year-old female who presented with diarrhea as the initial symptom, was misdiagnosed and received thrombolytic therapy for presumed pulmonary embolism. Progressive symptoms and subsequent surgery led to the diagnosis of PAIS, and early relapse after pulmonary endarterectomy. Her survival time was 17 months after pulmonary endarterectomy. To our knowledge, diarrhea as initial manifestation of PAIS has not been described.
authors.affiliation: Department of Respiratory Medicine, Medicine School of Zhejiang University, Hangzhou, People's Republic of China.
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Xu
authors.affiliation: Department of Respiratory Medicine, Medicine School of Zhejiang University, Hangzhou, People's Republic of China.
authors.forename: Ruifeng
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Department of Respiratory Medicine, Medicine School of Zhejiang University, Hangzhou, People's Republic of China.
authors.forename: Huihui
authors.initials: H
authors.lastname: Hu
authors.affiliation: Department of Respiratory Medicine, Medicine School of Zhejiang University, Hangzhou, People's Republic of China.
authors.forename: Wu
authors.initials: W
authors.lastname: Ye
authors.affiliation: Department of Pathology, Medicine School of Zhejiang University, Hangzhou, People's Republic of China.
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Family Medicine, Medicine School of Zhejiang University, Hangzhou, People's Republic of China.
authors.forename: Liying
authors.initials: L
authors.lastname: Chen
authors.affiliation: Endoscopy Center, Sir Run Run Shaw Hospital, Medicine School of Zhejiang University, Hangzhou, People's Republic of China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Qiu
authors.affiliation: Department of Respiratory Medicine, Medicine School of Zhejiang University, Hangzhou, People's Republic of China.
authors.forename: Kejing
authors.initials: K
authors.lastname: Ying
keywords: chronic diarrhea; paraneoplastic syndromes; pulmonary artery intimal sarcoma; pulmonary embolism; soft tissue sarcoma