• Asian Pacific Journal of Cancer Prevention
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• 제15권6호
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• pp.2733-2737
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• 2014

Objective: Molecular pathology tests are often carried for clinicopathological diagnosis and pathologists have established large collections of formalin-fixed, paraffin-embedded tissue (FFPE) banks. However, extraction of DNA from FFPE is a laborious and challenging for researchers in clinical laboratories. The aim of this study was to compare two widely used DNA extraction methods: using a QIAamp DNA FFPE kit from Qiagen and a Cobas Sample Preparation Kit from Roche, and evaluated the effect of the DNA quality on molecular diagnostics. Methods: DNA from FFPE non-small cell lung carcinoma tissues including biopsy and surgical specimens was extracted with both QIAamp DNA FFPE and Cobas Sample Preparation Kits and EGFR mutations of non-small cell lung carcinomas were detected by real-time quantitative PCR using the extracted DNA. Results and Conclusion: Our results showed that DNA extracted by QIAamp and Cobas methods were both suitable to detect downstream EGFR mutation in surgical specimens. Howover, Cobas method could yield more DNA from biopsy specimens, and gain much better EGFR mutation results.

• 대한두개안면성형외과학회지
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• 제22권5호
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• pp.280-284
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• 2021

Primary cutaneous marginal zone B-cell lymphoma (PCMZL) is an uncommon type of malignant lymphoma that mainly occurs in the trunk and upper extremity, with less frequent incidence observed on the head. Herein, we report the early diagnosis and treatment of a rare case of facial PCMZL in an Asian patient. A 51-year-old man presented with masses on the forehead and nose tip, which he had incidentally discovered 2 months previously. The masses appeared as a papule on the forehead and a patch on the nose. There were no signs of infection or bleeding, and the patient reported no other symptoms. After complete surgical excision, PCMZL was diagnosed based on the permanent biopsy. The histopathological findings revealed lymphoid aggregations with multifocal granulomas. Further treatment and follow-up were conducted at the hematology and oncology department. Despite its rarity in Asian populations, cutaneous lymphoma should be included in the differential diagnosis of facial masses. Early diagnosis and treatment based on a physical examination, imaging study, and excisional biopsy are important for a favorable prognosis.

• 대한두개안면성형외과학회지
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• 제20권2호
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• pp.121-125
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• 2019

Merkel cell carcinoma is a rare cutaneous carcinoma, featured by an aggressive clinical course and a mortality rate of 28% at 2 years. A 71-year-old female was affected by a 4.1-cm-wide locally advanced Merkel cell carcinoma of the upper eyelid, previously misdiagnosed as chalazion, with involvement of the extraocular muscles. Although the tumor showed a macroscopic spontaneous regression in size after the incisional biopsy, the mass was treated with neoadjuvant chemotherapy and surgical excision. Good functional and aesthetic result with preservation of the eyeball and absence of tumor recurrence were achieved at 3-year follow-up. In our experience, the combination of the inflammatory cascade due to the incisional biopsy and neoadjuvant chemotherapy led to the regression of a locally advanced large Merkel cell carcinoma of the eyelid.

• Tuberculosis and Respiratory Diseases
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• 제87권1호
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• pp.40-51
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• 2024

Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive, fibrosing interstitial pneumonia with a very poor prognosis. Accurate diagnosis of IPF is essential for good outcomes but remains a major medical challenge due to variability in clinical presentation and the shortcomings of existing diagnostic tests. Medical history collection is the first and most important step in the IPF diagnosis process; the clinical probability of IPF is high if the suspected patient is 60 years or older, male, and has a history of cigarette smoking. Systemic assessment for connective tissue disease is essential in the initial evaluation of patients with suspected IPF to identify potential causes of interstitial lung disease (ILD). Radiologic examination using high-resolution computed tomography plays a pivotal role in the evaluation of patients with ILD, and prone and expiratory computed tomography images can be considered. If additional tests such as surgical lung biopsy or transbronchial lung cryobiopsy are needed, transbronchial lung cryobiopsy should be considered as an alternative to surgical lung biopsy in medical centers with experience performing this procedure. Diagnosis through multidisciplinary discussion (MDD) is strongly recommended as MDD has become the cornerstone for diagnosis of IPF, and the scope of MDD has expanded to monitoring of disease progression and suggestion of appropriate treatment options.

• Asian Pacific Journal of Cancer Prevention
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• 제15권7호
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• pp.3179-3183
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• 2014

Background: The purpose of study was to evaluate radiologic or clinical features of breast cancer undergoing ultrasound (US)-guided 14G core needle biopsy (CNB) and analyze the differences between underestimated and accurately diagnosed groups. Materials and Methods: Of 1,898 cases of US-guided 14G CNB in our institute, 233 cases were proven to be cancer by surgical pathology. The pathologic results from CNB were invasive ductal carcinoma (IDC) (n=157), ductal carcinoma in situ (DCIS) (n=40), high-risk lesions in 22 cases, and benign in 14 cases. Among high-risk lesions, 7 cases of atypical ductal hyperplasia (ADH) were reported as cancer and 11 cases of DCIS were proven IDC in surgical pathology. Some 29 DCIS cases and 157 cases of IDC were correctly diagnosed with CNB. The clinical and imaging features between underestimated and accurately diagnosed breast cancers were compared. Results: Of 233 cancer cases, underestimation occurred in 18 lesions (7.7%). Among underestimated cancers, CNB proven ADH (n=2) and DCIS (n=11) were diagnosed as IDC and CNB proven ADH (n=5) were diagnosed at DCIS finally. Among the 186 accurately diagnosed group, the CNB results were IDC (n=157) and DCIS (n=29). Comparison of underestimated and accurately diagnosed groups for BI-RADS category, margin of mass on mammography and US and orientation of lesion on US revealed statistically significant differences. Conclusions: Underestimation of US-guided 14G CNB occurred in 7.7% of breast cancers. Between underestimated and correctly diagnosed groups, BI-RADS category, margin of the mass on mammography and margin and orientation of the lesions on US were different.

• Clinical Endoscopy
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• 제56권2호
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• pp.221-228
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• 2023

Background/Aims: Endoscopic ultrasound-guided tissue acquisition (EUS-TA) is essential for the diagnosis of pancreatic cancer. The feasibility of comprehensive genomic profiling (CGP) using samples obtained by EUS-TA has been under recent discussion. This study aimed to evaluate the utility of EUS-TA for CGP in a clinical setting. Methods: CGP was attempted in 178 samples obtained from 151 consecutive patients with pancreatic cancer at the Aichi Cancer Center between October 2019 and September 2021. We evaluated the adequacy of the samples for CGP and determined the factors associated with the adequacy of the samples obtained by EUS-TA retrospectively. Results: The overall adequacy for CGP was 65.2% (116/178), which was significantly different among the four sampling methods (EUS-TA vs. surgical specimen vs. percutaneous biopsy vs. duodenal biopsy, 56.0% [61/109] vs. 80.4% [41/51] vs. 76.5% [13/17] vs. 100.0% [1/1], respectively; p=0.022). In a univariate analysis, needle gauge/type was associated with adequacy (22 G fine-needle aspiration vs. 22 G fine-needle biopsy [FNB] vs. 19 G-FNB, 33.3% (5/15) vs. 53.5% (23/43) vs. 72.5% (29/40); p=0.022). The sample adequacy of 19 G-FNB for CGP was 72.5% (29/40), and there was no significant difference between 19 G-FNB and surgical specimens (p=0.375). Conclusions: To obtain adequate samples for CGP with EUS-TA, 19 G-FNB was shown to be the best in clinical practice. However, 19 G-FNB was not still sufficient, so further efforts are required to improve adequacy for CGP.

• Tuberculosis and Respiratory Diseases
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• 제63권1호
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• pp.59-66
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• 2007

연구배경: 수술적 폐생검은 간질성 폐질환의 확진 및 환자의 치료와 예후 예측에 도움을 주며, 안전하게 시행할 수 있는 방법이다. 간질성 폐질환의 확진을 위해 수술적 폐생검을 한 환자들을 분석하여, 간질성 폐질환 환자에 있어서 수술적 폐생검의 안전성 및 의의를 규명하고자 한다. 방 법: 2001년 1월부터 2006년 6월까지 충남대학교 병원에서 간질성 폐질환이 의심되어 확진을 위해서 수술적 폐생검을 시행 받은 70예 중, 간질성 폐질환으로 진단된 40명의 환자를 후향적으로 분석하였다. 결 과: 연령 분포는 21세에서 77세까지로 평균은 56.4${\pm}$16.1세이며, 총 40명의 환자 중 28명(70%)은 최소 개흉술을 시행하였고, 12명(30%)은 흉강경으로 폐조직 검사를 시행하였다. 수술적 폐생검 후 30일 전체 사망률과 90일 전체 사망률은 각각 15%와 20%이였다. 수술 후 90일 사망자(8명)와 생존자(32명)를 비교해 보면, 수술 전 추가적인 산소 요법이 필요했던 경우는 술후 90일 사망자가 100%(8명)이고, 생존자가 28.1%(9명)이었으며 (p=0.000), 수술 전 기계적 환기요법을 하였던 경우는 술후 90일 사망자가 62.5%(5명)이고, 생존자가 12.5%(4명)으로 (p=0.000) 수술 후 사망률과 통계적 유의성을 보였다. 결 론: 수술적 폐생검은 간질성 폐질환이 의심되는 환자 중에서 산소 공급을 하고 있거나, 기계적 환기 요법을 하고 있는 경우 술후 사망할 위험도가 높기 때문에, 임상에서 수술적 폐생검이 환자의 치료 및 예후에 어떤 영향을 미칠지 신중하게 생각하고 결정해야 한다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제50권1호
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• pp.56-59
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• 2024

There are very few case reports of the diagnosis and management of concurrent oral cavity and parapharyngeal space tumors. We present a case involving a 49-year-old female who presented with oral cavity squamous cell carcinoma confirmed by biopsy. Initial diagnostic workup revealed a concurrent parapharyngeal mass. Diagnostic studies and surgical therapy were tailored to account for both pathological entities. The patient was treated with a combination of surgery and adjuvant therapy. The surgical strategy was designed to address both lesions simultaneously. One year post-surgery, the patient had good response to therapy with no evidence of persistent or recurrent disease. This report discusses the outcome and treatment of a rare case of concurrent squamous cell carcinoma with a complicating parapharyngeal space tumor. It explores the diagnostic process, comprehensive workup, and the surgical management.

• Archives of Plastic Surgery
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• 제35권1호
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• pp.62-66
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• 2008

Purpose: Axillary osmidrosis is a distressing disorder characterized by unpleasant odor from axillary area and it is mainly associated with apocrine glands but also associated with eccrine glands. For surgical treatment of osmidrosis, recently ultrasound assisted liposuction(UAL) had been performed for many patients. According to the recent studies about ultrasound assisted liposuction for the treatment of osmidrosis, histologic studies about apocrine gland had been applied for 35 cases, but there were rare mention about eccrine gland and the relationship between two glands. The purpose of this article is to evaluate the effect of ultrasound assisted liposuction for the treatment of axillary osmidrosis on apocrine and eccrine glands. Methods: From January 2004 to January 2007, 35 patients underwent ultrasound assisted liposuction for the treatment of osmidrosis and 5 patients underwent histologic studies. Histologic examinations were performed before and after ultrasound assisted liposuction and each biopsy was performed in central axillary area. The volume ratio of both glands, presence of degeneration were examined. And in aspirates, distribution and density of both glands and their morphological changes were examined. Results: Preoperative biopsy results showed average volume ratio of apocrine glands to eccrine glands was 65 : 35. According to the postoperative biopsy results, the volume of apocrine glands in dermis were significantly reduced and glands were degenerated, but the volume of eccrine glands were slightly reduced and glands were mildly damaged. And the average volume ratio of two glands was 20 : 80. According to biopsy results of aspirates, the volume ratio of two glands was 85 : 15 and apocrine glands had significantly greater proportion. Conclusion: By comparison of each biopsy result, apocrine glands were more significantly reduced and degenerated than eccrine glands in all 5 cases. However, further studies with large sample sizes and close examinations are required.

• 대한영상의학회지
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• 제84권2호
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• pp.345-360
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• 2023

국내에 자기공명영상의 보급의 증가와 함께 유방 자기공명영상의 건수도 지속적으로 증가하고 있다. 하지만 이에 비해 자기공명영상 유도하 조직생검술 및 침위치결정술과 같은 유방의 중재적 시술은 초음파 유도하 시술이나 입체정위생검술에 비해 많이 이루어지지 않는다. 유방 자기공명영상은 다른 유방 영상 검사들에 비해 높은 민감도를 보이는 검사법이지만 그 특이도는 제한되는 검사법이기 때문에, 자기공명영상에서만 발견된 병변들은 자기공명영상 유도하 조직생검술이나 자기공명영상 유도하 침위치결정술을 통한 수술적 절제를 통하여 병리적 진단이 이루어져야 한다. 이러한 배경을 바탕으로, 본 종설에서는 자기공명영상 유도하 유방의 중재적 시술들의 적응증, 시술 방법, 시술 과정에서의 여러 고려 사항 및 제한점들에 대해 다루고자 한다.