肺硬化性血管瘤120例临床病理分析

目的探讨肺硬化性血管瘤(pulmonary sclerosing hemangioma,PSH)的临床病理特征及免疫表型。方法收集120例PSH的临床病理资料,探讨其临床特点、组织学特征及免疫表型。结果 PSH肿块与周围肺组织界限清楚,切面多为灰棕色,常伴出血灶。镜下可见两种肿瘤细胞、四种组织结构,多以混合形式存在(92/120,76.67%),并常发现泡沫样细胞灶性聚集及肥大细胞散在分布(83/120,69.17%)。免疫表型:表面立方细胞及间质多角形细胞TTF-1、EMA阳性,表面细胞SP-A、CK、Napsin A阳性,间质细胞vimentin阳性。结论 PSH大体表现及镜下典型的"两种细胞,四种结构"组织特点是诊断PSH的重要依据,泡沫样细胞灶性聚集及肥大细胞散在分布对PSH诊断及鉴别诊断有重要提示意义。     

Progressively increasing density of the solid center of a ground‐glass nodule in a solitary pulmonary capillary hemangioma: A case report

Solitary pulmonary capillary hemangiomas (SPCHs) are recently recognized, rare benign lesions that form solitary nodules owing to capillary proliferation. These lesions are usually detected incidentally as small ground‐glass nodules (GGNs) on computed tomography (CT), and progressively enlarge over time. The radiological distinction from peripheral lung cancers is particularly challenging. However, to date, there have been no reports on progressive changes in the central density of SPCH on CT. An asymptomatic 49‐year‐old man was referred to our hospital for an abnormal shadow that was detected on chest CT during medical check‐up. He was subsequently followed‐up with chest CT. The nodule increased in size, and the central area became progressively denser. He underwent surgery 5 years and 10 months after the first visit owing to suspicion of lung cancer. Despite the collapse of the surgical specimen by artifacts, histopathological examination revealed a diagnosis of SPCH; collagenous fibers were found in the walls of the intralesional capillaries. The patient is presently alive without any recurrence, 6 months after the operation. In this case, the SPCH demonstrated a GGN with progressively increasing density of the central solid area on the CT. This remarkable feature made the preoperative distinction from lung cancer particularly difficult.     

Solitary pulmonary capillary hemangioma: Clinicopathologic and radiologic characteristics of nine surgically resected cases

Background

Solitary pulmonary capillary hemangioma (SPCH) is an extraordinarily rare capillary derived mesenchymal neoplasm. Although routine morphology and immunohistochemistry are adequate for the diagnosis of classical SPCH in surgical specimens, true gross appearance identification of most tumor themselves and diagnosis for some exceptional cases are still very difficult. Furthermore, preoperative imaging and frozen diagnosis remain a challenge.