Journal of Nippon Medical School: Vol.69 No.3 page.282

Journal of Nippon Medical School

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ArticleTitle A Case of Chronic Expanding Hematoma Presenting as a Huge Mass in the Pleural Cavity

AuthorList Daisuke Okada¹, Kiyoshi Koizumi¹, Masashi Kawamoto², Shuji Haraguchi¹, Tomomi Hirata¹, Kyoji Hirai¹, Iwao Mikami¹, Mitsuhiro Fukushima¹, Shigeo Tanaka¹

Affiliation ¹Second Department of Surgery, Nippon Medical School, ²Department of Pathology, Nippon Medical School

Language EN

Volume 69

Issue 3

Year 2002

Page 282-285

Received December 11, 2001

Accepted January 18, 2002

Keywords hematoma etiology, hematoma surgery, thoracic tumor

Abstract
We report a case of a huge chronic expanding hematoma completely removed by surgery. A 71-year-old man was found to have a 3-cm-diameter round nodule in the posterior mediastinum seven years previously. He was not administered any treatment because he did not have any other serious symptoms. There was nothing in his history that could be related to his present condition, such as thoracic surgical treatment or tuberculosis. The massive tumor in the left pleural cavity grew, compressing the left lung and heart gradually in the past seven years. Cytological examination of a needle biopsy specimen showed only erythrocytes with a few infiltrating inflammatory cells. Moreover, his preoperative histopathological analysis did not reveal any significant findings. Therefore, he underwent complete resection of the hematoma including the fibrous capsule and left lower lobectomy. Severance of abundant new vascularizations caused massive bleeding. The postoperative course was uneventful. There was no recurrence in the two years. In cases of gradual growth of a mass without indications of malignancy, we should consider the existence of a chronic expanding hematoma even in patients without a history of thoracic operation or tuberculosis.

Correspondence to Daisuke Okada, MD, Second Department of Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan

ArticleTitle	A Case of Chronic Expanding Hematoma Presenting as a Huge Mass in the Pleural Cavity
AuthorList	Daisuke Okada¹, Kiyoshi Koizumi¹, Masashi Kawamoto², Shuji Haraguchi¹, Tomomi Hirata¹, Kyoji Hirai¹, Iwao Mikami¹, Mitsuhiro Fukushima¹, Shigeo Tanaka¹
Affiliation	¹Second Department of Surgery, Nippon Medical School, ²Department of Pathology, Nippon Medical School
Language	EN
Volume	69
Issue	3
Year	2002
Page	282-285
Received	December 11, 2001
Accepted	January 18, 2002
Keywords	hematoma etiology, hematoma surgery, thoracic tumor
Abstract	We report a case of a huge chronic expanding hematoma completely removed by surgery. A 71-year-old man was found to have a 3-cm-diameter round nodule in the posterior mediastinum seven years previously. He was not administered any treatment because he did not have any other serious symptoms. There was nothing in his history that could be related to his present condition, such as thoracic surgical treatment or tuberculosis. The massive tumor in the left pleural cavity grew, compressing the left lung and heart gradually in the past seven years. Cytological examination of a needle biopsy specimen showed only erythrocytes with a few infiltrating inflammatory cells. Moreover, his preoperative histopathological analysis did not reveal any significant findings. Therefore, he underwent complete resection of the hematoma including the fibrous capsule and left lower lobectomy. Severance of abundant new vascularizations caused massive bleeding. The postoperative course was uneventful. There was no recurrence in the two years. In cases of gradual growth of a mass without indications of malignancy, we should consider the existence of a chronic expanding hematoma even in patients without a history of thoracic operation or tuberculosis.
Correspondence to	Daisuke Okada, MD, Second Department of Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan