Changes in CT density of solitary capillary hemangioma of the lung upon varying patient position

Abstract

Solitary capillary hemangioma of the lung (SCHL) is a rare benign tumor that is difficult to differentiate from other nodular lesions, including lung cancer, on CT. We report a case of 58-year-old man with an SCHL of the left lower lung. A nodular lesion 7 mm in size varied in CT appearance when the position of the patient was changed: it was part solid and part ground-glass opacity (mixed GGO) in the supine position, but pure GGO (nonsolid) in the prone position. However, the possibility of a malignancy could not be completely excluded because the density of the lesion had increased slightly over the past five years, so the patient underwent surgical resection. The histological diagnosis was SCHL. Therefore, changes in the CT density of a nodule upon changing patient position may indicate an SCHL.

Solitary pulmonary capillary hemangioma presenting with a ground glass opacity: A case report & literature review

“…According to the report by Sakaguchi et al, 18F-fluorodeoxyglucose positron emission tomography for SPCH showed no abnormal uptake in the lesion [ 7 ]. Therefore, discriminating SPCH from these differential diagnoses based on imaging findings alone is challenging [ 8 , 9 ].…”

Radiomic Feature Analysis for Distinguishing Solitary Pulmonary Capillary Hemangioma From Lepidic-Predominant Lung Adenocarcinoma in Ground Glass Lung Nodules

“…However, the nal diagnosis of these indeterminate lung nodules includes not only malignancies but also benign lung tumors [16]. SPCH has been an uncommon benign lung tumor, with only 17 reported cases of surgically resected SPCH before 2018 [1,[3][4][5][6][7][8][9][10][11]. However, 25 more cases have been reported in the last two years [12,13].…”

“…The increasing incidence of this benign tumor raised the importance of preoperative diagnosis. However, SPCH is characterized by GGNs in CT images and mimics LPA radiographically [1,[3][4][5][6][7][8][9][10][11][12][13]. Even experienced thoracic surgeons and radiologists may regard SPCH as early primary lung cancer.…”

“…This uncommon disease was rst described in a report of eight autopsies in 2000 as "pulmonary capillary hemangiomatosis-like foci" [2], and the term SPCH was rst used in a report of two surgically resected patients in 2006 [3]. Only 17 cases of surgically resected SPCH have been reported in the English literature before 2018 [1,[3][4][5][6][7][8][9][10][11]. Clinically, SPCH usually presents as a ground-glass nodule (GGN) on chest computed tomography (CT) images, which is similar to the presentation of adenocarcinoma in situ, minimally invasive adenocarcinoma, and lepidicpredominant adenocarcinoma (LPA) of the lung [1,[3][4][5][6][7][8][9][10][11][12][13].…”

Case of solitary pulmonary capillary hemangioma: Pathological features based on frozen section analysis

“…Matsushita et al . reported a case in which the CT density changed from pure GGO to mixed GGO when the patient's position was changed . Moritani et al .…”