Inter-prefectural and urban-rural regional disparities in lung cancer surgery: a Japanese nationwide population-based cohort study from 2017 to 2019.

Purpose: To investigate regional disparities in lung cancer surgery in Japan.

Methods: The annual incidence of lung cancer, lung cancer surgery, and the number of board-certified thoracic surgeons in Japan during 2014-2019 were investigated using a national open database. Lung cancer surgeries were categorized by procedure (wedge resection, segmentectomy, lobectomy, pneumonectomy) and approach (open, thoracoscopic).

Focal positivity of immunohistochemical markers for pulmonary squamous cell carcinoma in primary pulmonary choriocarcinoma: A histopathological study.

Cytokeratin 5/6 (CK5/6), p63, and p40 are commonly used as immunohistochemical markers for squamous cell carcinoma (SqCC) of the lung. To elucidate their positivity in primary pulmonary choriocarcinoma (PPC), the present study examined 4 PPCs, including 1 surgically removed PPC and 3 postmortem PPCs. All PPCs consisted of nested cytotrophoblastic tumor cells and occasional syncytiotrophoblastic tumor cells although 1 surgically removed PPC was markedly affected by pre-operative therapy-associated necrosis and 3 postmortem PPCs coexisted with adenocarcinoma.

The natural history of stab wounds of the diaphragm: implications for a new management scheme for patients with penetrating thoracoabdominal trauma.

For most patients with abdominal stab wounds expectant management has become the norm. Thoracoabdominal stab wounds, however, raise concern about possible diaphragmatic injury, and diagnostic minilaparotomy, laparoscopy, or thoracoscopy have been advocated in such patients. The present study examined the natural course of an untreated diaphragmatic stab wound.

Laser patch welding: experimental study for application to endoscopic closure of bronchopleural fistula, a preliminary report.

Background And Objective: Postoperative bronchopleural fistula is a serious complication following pulmonary resection. To close the bronchopleural fistula, we developed a new method of endoscopic patch welding using laser tissue welding between bronchial tissue and a patch.

Study Design/materials And Methods: The feasibility of the laser patch welding was examined by in vitro and in vivo animal experiments.

The accuracy of computed tomography in the diagnosis of blunt small-bowel perforation.

Background: Computed tomography (CT) is commonly used to evaluate patients with possible blunt intra-abdominal injury. One of its reported weaknesses is failure to demonstrate intestinal trauma. However, CT accuracy in identifying blunt small-bowel perforation has not been adequately assessed.

Trauma team activation for 'mechanism of injury' blunt trauma victims: time for a change?

Excessive overtriage prompted a review of all stable blunt trauma victims < or = age 65 years transported to our trauma center from 1990 through 1992 only by virtue of mechanism of injury. Of 4392 blunt trauma patients, 2298 (52%) met review criteria. In this group 1712 (75%) were discharged home from the emergency room, and 586 were hospitalized: 367 (63%) for < or = 1 day; 465 (79%) for < or = 2 days.

Coexisting undifferentiated thymic carcinoma and thymic carcinoid tumor.

Thymic carcinoma is an unusual neoplasm, and the undifferentiated type is rare. Thymic carcinoid is also rare. This report describes a patient with coexisting undifferentiated thymic carcinoma and a carcinoid tumor.

[A case of squamous cell carcinoma of the lung associated with acanthosis nigricans and solitary bronchial papilloma].

A 58-year-old man diagnosed as having acanthosis nigricans symmetrically distributed on the face, neck, hands, navel and external genitals, was admitted to our department for further investigation of abnormal chest films. Bronchoscopy revealed squamous cell carcinoma of left S6 and solitary bronchial papilloma of left S3. After left pneumonectomy, facial hyperpigmentation improved slightly.

[Thoracoscopic laser coagulation shrinkage of blebs in the treatment of spontaneous pneumothorax].

As a thoracoscopic treatment for spontaneous pneumothorax, electrocautery has been mainly used. But contact type electrocautery has a risk of perforation of blebs. We adopted carbon monoxide laser (wave length 5.

[Therapeutic guide line for hemoptysis].

We report the result of treatment for thirty-two patients whose chief complaint was hemoptysis and represent the therapeutic guide line for hemoptysis. In thirty-two cases, there were twenty men and twelve women and average of age was fifty-two years old. Twenty-nine of them were chronic lung diseases such as tuberculosis and bronchiectasis and only three cases have malignant tumors.

[Surgical treatment of pathological stage III and IV in non-small cell lung cancer with peripheral tumor of 3 cm or less in diameter].

Among 287 patients underwent pulmonary resection between Mar 1978 and Dec 1989, 49 were proved pathologically to have their primary tumor of 3 cm or less in the greatest dimension. Twelve of these 49 classified to stage III A by the modiastinal lymph node metastasis or stage IV by the pulmonary metastasis. The histologic type of tumor was adenocarcinoma in 10 and squamous cell carcinoma in 2.