• Nuclear Medicine and Molecular Imaging
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• 제40권3호
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• pp.163-168
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• 2006

목적: 특발성 폐섬유증(Idiopathic pulmonary fibrosis: IPF)에서 폐암의 발생빈도가 정상인에 비하여 증가되어 있음이 알려져 있다. IPF 환자의 흥부전산화단층촬영(chest CT)에서 폐 결절이 관찰되는 경우 폐암의 발생과 IPF자체의 결절을 감별하기 어렵다. 이 연구에서는 IPF 환자의 chest CT에서 관찰된 결절의 악성 여부를 FDG PET을 이용해 분석하였다. 대상 및 방법 : IPF로 진단된 환자 중, chest CT에서 악성 결절이 의심되어 FDG PET을 시행한 16명을 대상으로 하였다. 총 16명 (남: 14, 여: 2, 나이: $67.53{\pm}9.83$세)의 환자에서 관찰된 28개의 결절에 대하여 FDG PET과 CT소견을 분석 하였다. 대상 환자 중 2명은 소세포암과 성문하암으로 치료 받은 병력이 있었으며, 나머지 환자는 악성종양의 기왕력이 없었다. 결절의 악성도 여부는 조직검사와 CT 추적검사로 판정 하였다. 결과 : 10개 의 결절은 폐암으로 진단되었고, 18개의 결절은 양성 결절로 판정되었다(조직병리검사: 6예, chest CT 추적검사: 22예). FDG PET의 예민도는 100%이었으며 특이도는 94.4%이었다. 크기와 형태 및 크기 변화 등을 참고한 CT의 예민도는 70%이었고.특이도는 44.4%이었다. 악성 결절의 maxSUV는 $7.68{\pm}3.96$, 양성 결절은 $1.22{\pm}0.65$ 이었다(p<0.001). 폐섬유증부위에서 측정한 maxSUV는 $1.80{\pm}0.43$로써 악성 결절보다 낮은 값이었으며, 양성 결절보다는 높은 값이었다(p<0.001; p<0.001). CT에서 측정한 악성 결절의 크기는 $23.95{\pm}10.15mm$, 양성 결절은 $10.83{\pm}5.23mm$이었다(p<0.02). 결론 : FDG PET은 IPF 환자의 CT에서 발견된 폐 결절을 감별하는데 도움이 되었다.

• 대한핵의학회지
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• 제36권2호
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• pp.140-142
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• 2002

A 67-year-old woman who had undergone anterior resection for a moderately differentiated adenocarcinoma of the rectum and wedge resection for liver metastasis presented with hematogenous lung metastasis. Metastatic pulmonary nodules in both lung fields were shown on plain chest radiograph and CT. Ga-67 SPECT images revealed accumulation of radioactivity corresponding to the pulmonary nodules. The authors present an unusual case of accumulation of Ga-67 in metastatic pulmonary nodules in a patient with a moderately differentiated adenocarcinoma of the rectum.

• Journal of Chest Surgery
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• 제29권11호
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• pp.1232-1240
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• 1996

부산대학교병원 흉부외과학교실에서는 1990년 1월부터 1995년 6월까지 폐결핵으로 추정진단하에 개 흉술을 시행한 121례를 관찰 분석하였다. 술후 병리조직학적인 최종진단은 폐결핵이 68례로 이중 결핵종이 29례이었으며, 폐암이 23례, 기관지 확장증이 16례, 폐국균종이 6례, 폐농양 2례, 양성낭종 2례등이었다. 121례의 남녀 성비는 81:40 이었고 연령분포는 폐결핵에서는 30대에서 27례(39.7%)로 가장 많았고 폐암에서는 50, 60대가 16례(69.6%)로 높은 빈도를 보였다. 방사선학적 소견상 결절성 병변을 보인 경우가 44례로, 이 중 폐결핵이 29례, 폐암이 15례이었다. 결핵성 결절은 폐암의 경우에 비해 크기가 3cm 미만이었고 석회화와 위성병변을 나타내는 빈도가 높았다. 수술적응은 타 질환 특히 폐암과의 감별을 요한 고립성 결절병변이 44례였고 일엽파괴폐가 31례, 대량객혈 25례, 공동성 병변 11레, 기관지병변이 3례, 일측파괴폐가 5례, 일측파괴폐와 농흉이 동반된 경우가 2례이었다. 술전 폐결핵이 의심됨 때는 폐암, 기관지확장증, 폐국균종, 폐농양 및 기타 양성 종양등과 감별하여야 하며 페결절이 크기가 3cm이상이거나 석회화와 위성병소가 없으며 항결핵제 투여에도 새로이 발생하고 PPD 피부반응검사 음성, CEA 값이 상승한 경우 폐암의 가능성 때문에 조기수술이 요구된다. 반면 크기가 3cm 미만이며 석회화와 위성병소를 동반하거나 PPD 피부반응검사 양성, ESR, CRP, ALP가 상승한 경우는 수술을 연기하고 경과관찰을 할 수 있을 것이다.

• Tuberculosis and Respiratory Diseases
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• 제64권2호
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• pp.153-157
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• 2008

항결핵제 치료 도중 병변이 악화되거나 새로 생기는 경우 일시적인 역설적 반응과 치료 실패를 감별하는 것이 중요하다. 역설적인 반응은 폐외 결핵, 특히 림프절과 중추신경계 결핵에서 잘 나타나는데 기존의 약제를 그대로 사용하더라도 일반적으로 잘 치유가 된다. 저자들은 속립성 폐결절이 항결핵제 투여 후 호전되고 있었으나 두개강내 결절은 오히려 악화된 소견을 보였지만 치료 약제를 변경하지 않았음에도 결국 치유된 역설적 반응을 경험하였기에 이를 보고하는 바이다.

• Tuberculosis and Respiratory Diseases
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• 제67권6호
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• pp.551-555
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• 2009

A benign pulmonary metastasizing leiomyoma is a recognized clinical entity that has been infrequently reported in the medical literature. We report two cases of a benign pulmonary metastasizing leiomyoma. A 35-year-old woman who underwent myomectomy and a cesarean section approximately 6 years earlier visited our hospital for further evaluation of incidentally revealed multiple lung nodules. A diagnostic percutaneuous biopsy was performed. Finally she was diagnosed with a benign metastasizing leiomyoma. The patient then received LH-RH and has been followed up since. The other 44-year-old woman presented after an initial radiology evaluation revealed the presence of multiple, small-sized lung nodules. She underwent a right middle lung wedge resection to confirm the diagnosis. Finally she diagnosed with a benign metastasizing leiomyoma. The multiple lung nodules have been followed up closely.

• Asian Pacific Journal of Cancer Prevention
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• 제15권11호
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• pp.4629-4635
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• 2014

Background: Diffusion-weighted imaging (DWI) makes it possible to detect malignant tumors based on the diffusion of water molecules. However, it is uncertain whether DWI has advantages over FDG-PET for distinguishing malignant from benign pulmonary nodules and masses. Materials and Methods: One hundred-forty-three lung cancers, 17 metastatic lung tumors, and 29 benign pulmonary nodules and masses were assessed in this study. DWI and FDG-PET were performed. Results: The apparent diffusion coefficient (ADC) value ($1.27{\pm}0.35{\times}10^{-3}mm^2/sec$) of malignant pulmonary nodules and masses was significantly lower than that ($1.66{\pm}0.58{\times}10^{-3}mm^2/sec$) of benign pulmonary nodules and masses. The maximum standardized uptake value (SUVmax: $7.47{\pm}6.10$) of malignant pulmonary nodules and masses were also significantly higher than that ($3.89{\pm}4.04$) of benign nodules and masses. By using optimal cutoff values for ADC ($1.44{\times}10^{-3}mm^2/sec$) and for SUVmax (3.43), which were determined with receiver operating characteristics curves (ROC curves), the sensitivity (80.0%) of DWI was significantly higher than that (70.0%) of FDG-PET. The specificity (65.5%) of DWI was equal to that (65.5%) of FDG-PET. The accuracy (77.8%) of DWI was not significantly higher than that (69.3%) of FDG-PET for pulmonary nodules and masses. As the percentage of bronchioloalveolar carcinoma (BAC) component in adenocarcinoma increased, the sensitivity of FDG-PET decreased. DWI could not help in the diagnosis of mucinous adenocarcinomas as malignant, and FDG-PET could help in the correct diagnosis of 5 out of 6 mucinous adenocarcinomas as malignant. Conclusions: DWI has higher potential than PET in assessing pulmonary nodules and masses. Both diagnostic approaches have their specific strengths and weaknesses which are determined by the underlying pathology of pulmonary nodules and masses.

• 대한세포병리학회지
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• 제9권2호
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• pp.187-191
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• 1998

Alveolar soft part sarcoma(ASPS) is a rare malignant neoplasm with a distinct clinicopathologic entity of which fine needle aspiration(FNA) cytologic findings have been described in only a few reports. Although patients usually present with an isolated soft-tissue mass in the extremity, metastasis can occur in about 13 % of total cases and the most frequent metastatic site is the lung. We have recently experienced a FNA cytologic case of ASPS in the lung. A 23-year-old female patient was admitted to this hospital due to 2-month-history of cough She had been good in health before the visit. Chest computed tomography revealed multiple, variable sized, bilateral pulmonary nodules. Physical examination and other staging work up revealed no other lesions except for pulmonary nodules. A percutaneous transthoracic FNA was performed from the pulmonary nodules. The smear was cellular and most cells were arranged singly. In addition, a few clusters lined by thin-walled vasculature with a pseudoalveolar pattern were present. Some of the tumor cells were large and polygonal lo oval with abundant granular or vacuolated cytoplasm. Most cells were naked nuclei showing finely granular chromatin pattern with prominent central nucleoli.

• 한국정보전자통신기술학회논문지
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• 제6권1호
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• pp.37-44
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• 2013

본 논문에서는 voxel classification을 이용한 폐 결절 자동 검출 시스템을 제안한다. 제안하는 폐 영상 분석 방법은 크게 세 단계로 구성된다. 첫 번째 단계에서는 분석 대상 폐 영역을 분할한다. 그리고 두 번째 단계는 분할된 폐 영역 내에서 폐 구조물을 분할한다. 마지막으로 두 번째 과정에서 분할된 폐결절후보와 폐혈관 voxel을 대상으로 log-polar sampling을 이용한 특징 벡터를 만들고, 특징벡터를 입력 값으로 하여 support vector machine classifier를 이용하여 분석대상 voxel을 폐 결절 voxel과 비결절 voxel로 구분하여 폐 결절을 검출한다.

• Journal of Yeungnam Medical Science
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• 제34권1호
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• pp.84-87
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• 2017

Nodular lymphoid hyperplasia (NLH) is a benign lymphoproliferative disease that can affect the lung. Because of its rarity, little is known about the etiology and natural history of NLH. Most cases are usually asymptomatic and found incidentally on imaging studies. Imaging finding of NLH has shown most commonly as a solitary lesion, although multifocal pulmonary nodules may be seen. Surgical resection has proved curative in the cases previously described. We report a rare case of NLH in a 55 year-old man who presented with bilateral multiple pulmonary nodules on chest radiography. Open biopsy was performed from the upper and lower lobe of the left lung. The lesions were pathologically diagnosed as pulmonary NLH. Multifocal residual nodules in both lungs remain stable without spontaneous regression during the 3 years of follow-up.

• Journal of Chest Surgery
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• 제54권5호
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• pp.333-337
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• 2021

The clinical significance of ground-glass nodules (GGNs) has been investigated in extensive clinical research for many years. The natural history of GGNs is known to be closely related to their size, proportion of solid components, and size progression over time. Based on these data, several guidelines for GGN management have been published worldwide. The indications for nonsurgical biopsy or surgical resection of GGNs are as follows: pure GGNs between 5 and 10 mm in size if they increase in size or show development of a solid component at follow-up, pure GGNs >10-15mm that remain stable but persistent, part-solid nodules >8 mm persisting at follow-up, or part-solid nodules with a solid component >6 mm at follow-up. Newly updated data considering geographical or racial factors and recent developments in surgical techniques may improve the surgical indications for GGNs in the near future.