[Surgical Case of the Primary Pulmonary Leiomyosarcoma:Report of a Case].

A 70-year-old man was referred for an abnormal chest shadow. Enhanced computed tomography (CT) revealed a well-circumscribed lung tumor of 53 mm in diameter in the left upper lobe with slight enhancement. Positron emission tomography-CT showed a high maximum standardized uptake value for the tumor but no metastasis in the lymph nodes or other organs. Although a definitive diagnosis could not be made by transbronchial biopsy, the tumor was highly suspected to be malignant based on the radiological findings, and a left upper lobectomy with mediastinal lymph nodes dissection was performed for definitive diagnosis and treatment. A pathological examination showed the tumor to be composed of mitotic spindle-shaped cells, which were positive for α-smooth muscle actin, desmin, and caldesmon. The MIB-1 labelling index was 60~70%. According to these pathologic findings, the tumor was identified as a leiomyosarcoma. Metastases to the skin of chest and hilar lymph nodes were noted six months after the surgery for which radiotherapy was performed.

[The Outcome of Second Anatomical Pulmonary Resection for Ipsilateral Metachronous Lung Cancer].

INTRODUCTIONS: When the first intervention for lung cancer is anatomical resection, the ipsilateral repeat anatomical resection for metachronous second lung cancer becomes technically challenging. Herein, we report the outcomes of second anatomical pulmonary resection for ipsilateral metachronous lung cancer at our institution. SUBJECTS: Sixteen consecutive patients[ 10 men and 6 women, average age 70( range 59~81) years] were reviewed in this retrospective study. These patients underwent ipsilateral repeat anatomical resection for metachronous second lung cancer between 2009 and 2020. RESULTS: All case required right-sided lung resections. The previous interventions of patients included upper lobectomy, lower lobectomy, middle lobectomy, S2 segmentectomy, and S6 and S10a segmentectomy in 9, 4, 1, 1, and 1 case, respectively. The second surgical interventions were middle lobectomy, S6 segmentectomy, upper lobectomy, lower lobectomy, S1 segmentectomy, and S2 segmentectomy, in 6, 4, 2, 2, 1, and 1 case, respectively. Postoperative complications occurred in three patients. The median follow-up period was 53.5 months. Three patients died during the follow-up period. Of the 13 patients still alive, 6 had recurrence. The five-year overall survival rate was 80%. CONCLUSIONS: Although only a few cases were assessed, the prognosis after second anatomical pulmonary resection for ipsilateral metachronous lung cancer at our institution was satisfactory.

[Completion Pneumonectomy for the Recurrence of Lung Cancer].

INTRODUCTIONS: The morbidity and mortality after completion pneumonectomy (CP) are reportedly high. We, herein, report the outcomes of CP at our institution. SUBJECTS: Nine consecutive patients [7 men and 2 women, average age of 72 years(range 44~84 years)] who underwent CP for recurrence of lung cancer during 2012~2018 were retrospectively reviewed. RESULTS: Right-sided sleeve CP was performed in two cases and left-sided CP in seven cases. The indications for surgery were lymph node metastasis of the cancer, pulmonary metastasis, and bronchial stump recurrence in 4, 3, and 2 cases, respectively. Postoperative complications occurred in six patients. One of the patients who underwent right sleeve pneumonectomy developed bronchopleural fistula and died 68 days after the surgery. The mean follow-up period was 33 months, and four patients died during follow-up. Of the 5 patients still alive, 4 had no recurrence and 1 had recurrence in the stump of the main bronchus. The five-year overall survival rate was 78%. CONCLUSIONS: Although only few cases were assessed, the prognosis after CP at our institution was relatively good.

Intrapulmonary solitary fibrous tumour: a case report.

Solitary fibrous tumours (SFTs) mainly originate from the visceral pleura and may protrude to the thoracic cavity, but intrapulmonary SFTs are extremely rare. We describe a rare case of SFT arising in the right lung of an 83-year-old man who underwent surgical excision. Chest computed tomography (CT) revealed a 10-mm tumour in the lower lobe of the right lung. The size of tumour gradually increased and reached 17 mm 2 years after the first radiologic examination. Considering the possibility of malignancy, wedge resection of the right lower lobe was performed via video-assisted thoracic surgery. Microscopically, the tumour consisted mainly of spindle-shaped cells. Immunohistochemical staining indicated the tumour was positive for CD34, STAT6, vimentin and bcl-2, but negative for cytokeratins, D2-40 and S-100. Based on the histological findings, the tumour was diagnosed as SFT. The patient has been in good health for 6 months since the surgery.

[Techniques and Outcomes of Segmentectomy for Non-small Cell Lung Cancer].

BACKGROUND: The most important step in lung segmentectomy is to determine an appropriate intersegmental plane to obtain sufficient pre- and intraoperative margins. Inappropriate dissection of the lung parenchyma leads to loss of oncological validity and additionally causes various complications such as pneumonia, prolonged air leakage, lung congestion, and atelectasis. OBJECTIVES: In this study, we evaluated the validity of segmentectomy for non-small cell lung cancer (NSCLC) based on evaluation of survival outcomes and recurrence patterns. OPERATIVE TECHNIQUE: In principle, we usually perform video-assisted thoracic surgery segmentectomy. Hilar dissection is performed along the intersegmental vein under ultrasonographic guidance, and the peripheral lung parenchyma is subsequently stapled. We usually create inflation-deflation lines from before to determine the intersegmental lines. Recently, near-infrared fluorescence imaging with indocyanine green is also used. METHODS: We retrospectively reviewed data of 101 patients who underwent segmentectomy for lung cancer between 2007 and 2014. RESULTS: The 5- and 10-year overall survival rates were 84% and 62%, respectively. The 5- and 10-year recurrence-free survival rates were 83% and 63%, respectively. Recurrence at the surgical margin occurred in 5 patients( pulmonary stump:4 patients, bronchial stump:1 patient). CONCLUSION: Segmentectomy may be acceptable for patients with Stage I NSCLC. Accurate determination of the intersegmental plane is essential to avoid stump recurrence.