• Title/Summary/Keyword: Core needle

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Comparing Organic Carbon Storage of Upper 15-cm Soils between Different Land Use Types in Korean Inland

  • Han, Kyung-Hwa;Cho, Hee-Rae;Lee, Jeong-Tae;Lee, Gye-Jun;Hong, Suk-Young;Zhang, Yong-Seon
    • Korean Journal of Soil Science and Fertilizer
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    • v.44 no.6
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    • pp.1314-1319
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    • 2011
  • This study was carried out to investigate the surface soil organic carbon fractions affecting by different land use types, including needle-leaf forest (FN), broad-leaf forest (FB), pasture, annual upland cropping land (upland), and paddy rice land (paddy). We chose seven regions across Korean inland, considering sea level altitude, and measured soil organic carbon content and physico-chemical properties such as bulk density at a depth of 0~15 cm using core samples in April for the each land use type. In addition, labile organic carbon fractions in soil including light fraction and hot water extractable carbon were investigated. From this study, organic carbon storage (Mg C per ha) in the upper 15-cm soils was highest in FB (37.8), and decreased in the order of pasture (29.1), FN (28.8), paddy (21.9), and upland crop (19.9). In forest, more than 20% of soil organic carbon existed as light fraction, the free organic matter. Hot-water extractable carbon contents of soils in five land use types were lower than 7% of their soil organic carbon content.

Immunoglobulin G4-Related Disease Masquerading Anaplastic Thyroid Carcinoma

  • Kim, Ji-a;Jo, Min-gyu;Kim, Seok-hyun;Kim, Young Geum;Cha, Wonjae
    • Journal of Clinical Otolaryngology Head and Neck Surgery
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    • v.29 no.2
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    • pp.301-306
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    • 2018
  • Immunoglobulin G4-related disease (IgG4RD) is a chronic inflammatory condition characterized by tissue infiltration with lymphocytes and IgG4-secreting plasma cells, as well as varying degrees of fibrosis. We report a case of a 70-year-old man with a rapid-growing cervical mass for several months. Computed tomography and positron emission tomography showed a huge, ill-defined mass involving left thyroid lobe and encasing the common carotid artery, which was clinically and radiologically suspicious for anaplastic thyroid carcinoma. Ultrasonography-guided core needle biopsy was performed and histopathology examination revealed to be consistent with IgG4RD, and the IgG4/IgG ratio was 0.6. After oral corticosteroid was administered, the mass was dramatically resolved. Because IgG4RD often presents as a single localized and infiltrated mass lesion, it can be confused and misdiagnosed as a malignancy. Thus, clinicians should consider IgG4RD as a differential diagnosis in a rapid-growing neck mass to prevent unnecessary and excessive treatments.

A Case of Unilateral Vocal Fold Paralysis Secondary to Sarcoidosis (사르코이드증에 의한 일측 성대 마비 1예)

  • Lee, Oh-Hyeong;Bang, Jooin;Lee, Dohee;Cho, Jung-Hae
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.30 no.1
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    • pp.61-64
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    • 2019
  • Sarcoidosis is a multisystem granulomatous disease of unknown etiology. Vocal fold paralysis secondary to sarcoidosis is extremely rare but it can develop as a result of compressive lymphadenopathy, granulomatous infiltration, and neural involvement. We report the case of a 56-year-old woman who presented with unilateral vocal fold paralysis and enlarged supraclavicular lymph nodes. Computed tomography of the neck revealed multiple, enlarged, and matted lymph nodes at the cervical level of IV. An ultrasound-guided core needle biopsy of the lymph node was performed, and a histopathological diagnosis of sarcoidosis was made by validating the presence of noncaseating granuloma. After implementation of steroid therapy, the patient exhibited immediate recovery from vocal fold paralysis. Although an extremely rare disease, sarcoidosis should be included in the differential diagnosis of vocal fold paralysis. Accurate diagnosis and prompt steroid treatment may reduce the morbidity of patients with vocal fold paralysis secondary to sarcoidosis.

Imaging Findings of Axillary Granular Cell Tumor in a Patient with Breast Cancer History: A Case Report (유방암 과거력을 가진 환자에서 액와부 과립세포종의 영상 소견: 증례 보고)

  • Jeongeum Oh;Ji Yeon Park;Mee Joo
    • Journal of the Korean Society of Radiology
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    • v.84 no.5
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    • pp.1176-1180
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    • 2023
  • Granular cell tumors (GCTs) are rare soft tissue tumor, originating from neural or perineural cells. We present a case of axillary GCT in a 69-year-old woman with breast cancer history and discuss the various radiologic findings. US revealed a circumscribed oval heterogeneous iso- and hyperechoic mass in the left axilla. Chest CT showed a well-defined, oval, and mildly enhancing mass in the left axilla on the lateral aspect of the pectoralis muscle. A final diagnosis of GCT was made through US-guided core needle biopsy. Follow-up US showed no significant changes in the axillary GCT. Familiarity with GCT may facilitate early diagnosis and subsequent management.

Prostate Biopsy: General Consideration and Systematic Biopsy (전립선 생검: 일반적 고려사항 및 체계적 생검)

  • Hyungwoo Ahn
    • Journal of the Korean Society of Radiology
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    • v.84 no.6
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    • pp.1211-1219
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    • 2023
  • Korea is rapidly entering into an aging society, and an increasing socioeconomic burden related to prostate cancer is inevitable. Therefore, the need for early detection and accurate diagnosis of prostate cancer is becoming increasingly critical. Ideally, a biopsy should accurately detect cancers using a minimum number of cores. However, as prostate cancer is often indistinguishable on imaging, image-guided targeted biopsies alone are insufficient for diagnosis. After decades of trial and error, the diagnosis of prostate cancer relies heavily on systematic biopsy, which is characterized by random and repetitive core acquisition throughout the gland. This review will provide an overview of the historical aspects of prostate cancer diagnosis. Moreover, the review will also address the general considerations involved in prostate biopsy, and discuss the periprocedural management of the patients.

Atypical Ductal Hyperplasia: Risk Factors for Predicting Pathologic Upgrade on Excisional Biopsy (침생검 조직검사에서 진단된 비정형 관상피증식증: 수술적 절제 생검에서 악성으로 진단될 가능성을 예측할 수 있는 위험인자들)

  • Ko Woon Park;Boo-Kyung Han;Sun Jung Rhee;Soo Youn Cho;Eun Young Ko;Eun Sook Ko;Ji Soo Choi
    • Journal of the Korean Society of Radiology
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    • v.83 no.3
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    • pp.632-644
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    • 2022
  • Purpose To determine the incidence of atypical ductal hyperplasia (ADH) in needle biopsy and the upgrade rate to carcinoma, and to evaluate difference in findings between the upgrade and non-upgrade groups. Materials and Methods Among 9660 needle biopsies performed over 48 months, we reviewed the radiologic and histopathologic findings of ADH and compared the differences in imaging findings (mammography and breast US) and biopsy methods between the upgrade and non-upgrade groups. Results The incidence of ADH was 1.7% (169/9660). Of 112 resected cases and 30 cases followed-up for over 2 years, 35 were upgraded to carcinoma (24.6%, 35/142). The upgrade rates were significantly different according to biopsy methods: US-guided core needle biopsy (USCNB) (40.7%, 22/54) vs. stereotactic-vacuum-assisted biopsy (S-VAB) (16.0%, 12/75) vs. USguided VAB (US-VAB) (7.7%, 1/13) (p = 0.002). Multivariable analysis showed that only US-CNB (odds ratio = 5.19, 95% confidence interval: 2.16-13.95, p < 0.001) was an independent predictor for pathologic upgrade. There was no upgrade when a sonographic mass was biopsied by US-VAB (n = 7) Conclusion The incidence of ADH was relatively low (1.7%) and the upgrade rate was 24.6%. Surgical excision should be considered because of the considerable upgrade rate, except in the case of US-VAB.

Delayed Cancer Diagnosis in Thyroid Nodules Initially Treated as Benign With Radiofrequency Ablation: Ultrasound Characteristics and Predictors for Cancer

  • Myoung Kyoung Kim;Jung Hee Shin;Soo Yeon Hahn;Haejung Kim
    • Korean Journal of Radiology
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    • v.24 no.9
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    • pp.903-911
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    • 2023
  • Objective: Regrowth after radiofrequency ablation (RFA) of symptomatic large thyroid nodules, initially treated as benign, sometimes turns out to be malignancies. This study aimed to assess the ultrasound (US) characteristics of thyroid nodules initially treated as benign with RFA and later diagnosed as cancers, predictive factors for cancers masquerading as benign, and methods to avoid RFA in these cancers. Materials and Methods: We reviewed the medical records of 134 consecutive patients with 148 nodules who underwent RFA between February 2008 and November 2016 for the debulking of symptomatic thyroid nodules diagnosed as benign using US-guided biopsy. We investigated the pre-RFA characteristics of the thyroid nodules, changes at follow-up after RFA, and the final surgical pathology. Results: Nodule regrowth after RFA was observed in 36 (24.3%) of the 148 benign nodules. Twenty-two of the 36 nodules were surgically removed, and malignancies were confirmed in seven (19.4% of 36). Of the 22 nodules removed surgically, pre-RFA median volume (range) was significantly larger for malignant nodules than for benign nodules: 22.4 (13.9-84.5) vs. 13.4 (7.3-16.8) mL (P = 0.04). There was no significant difference in the regrowth interval between benign and malignant nodules (P = 0.49). The median volume reduction rate (range) at 12 months was significantly lower for malignant nodules than for benign nodules (51.4% [0-57.8] vs. 83.8% [47.9-89.6]) (P = 0.01). The pre-RFA benignity of all seven malignant nodules was confirmed using two US-guided fine-needle aspirations (FNAs), except for one nodule, which was confirmed using US-guided core-needle biopsy (CNB). Regrown malignant nodules were diagnosed as suspicious follicular neoplasms by CNB. Histological examination of the malignant nodules revealed follicular thyroid carcinomas, except for one follicular variant, a papillary thyroid carcinoma. Conclusion: Symptomatic large benign thyroid nodules showing regrowth or suboptimal reduction after RFA may have malignant potential. The confirmation of these nodules is better with CNB than with FNA.

Evaluation of the Usefulness of Differential Diagnosis of Breast Mass using Elasticity Score and Elasticity Ratio in Elastography (탄성초음파에서 유방종괴의 감별진단을 위한 탄성도 점수와 변형비의 유용성 평가)

  • An, Hyun;Im, In-Chul;Lee, Hyo-Yeong
    • Journal of the Korean Society of Radiology
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    • v.12 no.5
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    • pp.677-682
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    • 2018
  • This study evaluated the usefulness of the elasticity score and elasticity ratio in the differential diagnosis of benign and malignant lesion in breast elastography. We performed a retrospective analysis based on the results of core needle biopsy histology. The Mann-Whitney U test was used to confirm the difference between the 5-degree elasticity score and the Fisher's Exact test. ROC curve analysis was used to determine the elasticity score and the best cut-off value of the elasticity ratio for the prediction of malignant lesions. There was a statistically significant difference (p= .000) between the homogeneity of the elasticity score and the difference of the elasticity ratio between the benign and malignant lesion groups. On the ROC curve analysis, the elasticity score and the elasticity ratio for predicting benign and malignant lesion were determined as AUC 0.806, 0.824, cut-off value 3, 4.4 (p= .001). Therefore, the elasticity score and elasticity ratio may be useful in the differential diagnosis of breast mass.

A Case Report of Axillary Hibernoma: US, CT, MR, and Histopathologic Findings (액와부 갈색지방종의 증례 보고: 초음파, 컴퓨터단층촬영, 자기공명영상, 병리 소견)

  • Ji Yeon Park;Seong Yoon Yi;Ji Young Lee;Tae Jung Kwon
    • Journal of the Korean Society of Radiology
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    • v.83 no.2
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    • pp.439-443
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    • 2022
  • Hibernoma is a rare benign tumor of brown adipose tissue. Herein, we report a case of axillary hibernoma in a 53-year-old female and discuss the various radiologic findings. The US revealed a 4.5-cm well-defined oval heterogenous hyperechoic mass in the right axilla with anterior displacement of the axillary vessels. Non-enhanced chest CT showed a 5.0-cm well defined, oval, and low-attenuated mass. MRI demonstrated a 5.5-cm mass with heterogeneous intermediate-to-high signal intensity on T1-and T2-weighted images and irregular enhancement at the peripheral portion. The patient underwent an US-guided core needle biopsy and the final diagnosis was hibernoma.

Imaging Findings of Nodular Fasciitis in Breast including Artificial Intelligence Mammography and Shear Wave Elastography: A Case Report (유방의 결절성 근막염의 인공지능 유방촬영술과 탄성초음파를 포함한 영상 소견: 증례 보고)

  • So Hyeong Park;Ji Yeon Park;Mee Joo;Jae Il Kim
    • Journal of the Korean Society of Radiology
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    • v.84 no.6
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    • pp.1397-1402
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    • 2023
  • Nodular fasciitis is a benign fibroblastic proliferation rarely reported in the breast. We report the case of a 55-year-old woman who presented with imaging findings that resembled a malignancy. Mammography revealed an isodense nodule with partially indistinct margin in the right breast, showing the abnormality score 75% on artificial intelligence. Ultrasonography revealed an oval hypoechoic nodule with microlobulated margin, echogenic halo, increased blood flow, and soft elasticity. After core needle biopsy and excision, nodular fasciitis was diagnosed. Although nodular fasciitis of the breast is rare, it may mimic malignancy; therefore, it should be considered as a differential diagnosis to prevent unnecessary intervention.