Jin Kyung An

Eulji University, Sŏul, Seoul, South Korea

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Publications (11)8.46 Total impact

  • Jin Kyung An · Jeong Joo Woo · Seung A Lee
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    ABSTRACT: Mastitis is an inflammatory condition of the breast with common symptoms of pain, swelling, erythema, warmth, and fever. Diagnosis of mastitis is easily made on the basis of typical symptoms and ultrasonographic findings, such as diffusely increased echogenicity of the parenchyma and subcutaneous fat, or skin thickening. However, when it occurs in women middle-aged or older, associated malignancy should be considered. In our cases, we detected irregular hypoechoic malignant masses after the disappearance of inflammatory changes. Therefore, when non-puerperal women have inflammatory signs on their breast, follow-up imaging should be performed. In particular, in the case of persistent or growing palpability after the recovery of breast inflammation, percutaneous core biopsy and short-term follow-up with ultrasonography should be considered to exclude the associated malignancy.
    No preview · Article · Jun 2015
  • Minchul Kim · Jeong Joo Woo · Jin Kyung An · Young Kwon Cho
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    ABSTRACT: Anomalous origin of one pulmonary artery from the ascending aorta (AOPA) is a rare congenital malformation. Fewer than 150 cases have been reported to date in the world, with 95 % of these documented during the first year of the patient's life. We encountered a rare case of AOPA associated with patent ductus arteriosus in a 41-year-old female, who had reached the most advanced age of any known, previously untreated AOPA patient. We herein present our findings for this patient on plain chest radiography, computed tomography, and perfusion scan.
    No preview · Article · Jan 2015 · Japanese journal of radiology
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    Jin Kyung An · Jeong Joo Woo · Jae Hee Kang · Eun Kyung Kim
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    ABSTRACT: A small-cell carcinoma is one of the histologic subtypes of primary neuroendocrine carcinomas of the breast. A small-cell carcinoma is a rare entity of the breast and exhibits similar morphologic features as neuroendocrine tumors of the gastrointestinal tract and lung. We present the imaging and pathologic findings of a primary small-cell neuroendocrine carcinoma of the breast. This is the first report of a primary small-cell carcinoma arising from the breast in Korea.
    Preview · Article · Feb 2012
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    Min Sun Jeong · Jae Hee Kang · Eun Kyung Kim · Jeong Joo Woo · Hyun Sook Kim · Jin Kyung An
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    ABSTRACT: Microglandular adenosis of the breast is a benign proliferative lesion, and is a rare subtype of adenosis. The pathologic findings and clinical symptoms can mimic those of breast cancer. Microglandular adenosis has been frequently associated with invasive carcinoma and in situ carcinoma of the breast. Many reports have described a spectrum of the lesions, ranging from microglandular adenosis to cancer arising from microglandular adenosis. However, most of them have focused on the pathology, and there are a few cases that report imaging findings. In the present case, we report the imaging and pathologic findings of a ductal carcinoma in situ arising in microglandular adenosis. A 57-year-old woman detected a palpable mass in her left breast. Mammogram showed an ill-defined irregular isodense mass, and sonogram showed hyperechoic irregular mass with indistinct margin. The patient underwent breast conserving surgery and adjuvant radiotherapy.
    Preview · Article · Jan 2012
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    ABSTRACT: Takayasu arteritis associated with sarcoidosis is very rare with only a few cases reported. We report on a case of a 55-year-old woman who was incidentally diagnosed with sarcoidosis and demonstrated numbness and weakness of the left upper limb and lower extremities associated with Takayasu arteritis.
    Preview · Article · Jan 2011
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    ABSTRACT: Quercetin, an anti-oxidant flavonoid that is widely distributed in the plant kingdom, has been suggested to have chemopreventive effects on cancer cells, although the mechanism is not completely understood. In this study, we found that quercetin increased the phosphorylation of AMP-activated protein kinase (AMPK) and downstream acetyl-CoA carboxylase (ACC) and suppressed the viability of HeLa cells. AICAR, an AMPK activator, and quercetin down-regulated heat shock protein (HSP)70 and increased the activity of the pro-apoptotic effector, caspase 3. Knock-down of AMPK blocked quercetin-mediated HSP70 down-regulation. Moreover, knock-down of HSP70 enhanced quercetin-mediated caspase 3 activation. Furthermore, quercetin sustained epidermal growth factor receptor (EGFR) activation by suppressing the phosphatases, PP2a and SHP-2. Finally, quercetin increased the interaction between EGFR and Cbl, and also induced the tyrosine phosphorylation of Cbl. Together, these results suggest that quercetin may have anti-tumor effects on HeLa cells via AMPK-induced HSP70 and down-regulation of EGFR.
    No preview · Article · May 2010 · Journal of Cellular Physiology
  • Jin Kyung An · Jae Hee Kang · Eun Kyung Kim

    No preview · Article · Aug 2009 · Ultrasound in Medicine & Biology
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    ABSTRACT: Acute obstructive cholangitis due to the migration of necrotized tumor fragment is a rare complication occurring after a transarterial chemoembolization. The percutaneous tumor removal procedure following percutaneous transhepatic biliary drainage is an appropriate treatment over endoscopic removal for the relief of acute cholangitis in this case. Following this serial management, no invasive hepatocellular carcinoma of the bile duct recurred after two years of follow-up.
    Full-text · Article · Mar 2009 · Korean journal of radiology: official journal of the Korean Radiological Society
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    ABSTRACT: Sarcoidosis is a granulomatous multisystemic disorder that rarely involves subcutaneous tissue. We describe the MR imaging findings of a subcutaneous sarcoidosis in a patient that presented with a nontender, palpable soft tissue mass on the left buttock, which was confirmed after surgical excision. The MR images showed the presence of a subcutaneous mass that breached the adjacent fascia with an irregular outline and homogeneous, slightly higher signal intensity than the surrounding muscle as seen on a T2-weighted image and with homogeneous enhancement after contrast injection. The lesion could not be differentiated from a sarcoma or a malignancy.
    Full-text · Article · Jan 2009
  • Jin Kyung An · Jae Hee Kang · Eun Kyung Kim
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    ABSTRACT: PURPOSE/AIM The purpose of this exhibit is:1. To present the imaging findings of circumscribed breast malignancies. 2. To provide the key points for diagnosis of circumscribed breast malignancies. CONTENT ORGANIZATION •Definition of circumscribed masses in BI-RADS •Sample cases -Invasive ductal carcinoma, NOS -Invasive ductal carcinoma with cystic change -Mucinous carcinoma -Medullary carcinoma -Intracystic papillary carcinoma -Non-Hodgkin lymphoma •Suspicious findings to be clue for malignancy -Complex cystic mass -Not parallel orientation -Change in size -Heterogeneous internal echo -Subtle suspicious findings in margin SUMMARY 1. Knowledge of circumscribed malignancy can avoid misdiagnosing a malignancy as a benign lesion. 2. Comparison between old and present study should be performed to catch a subtle change. 3. Spot compression view or magnification view should be properly used for detailed analysis. 4. Sonogram is very useful method to differentiate the cystic and solid mass and to provide the detailed information about the mass. 5. Only one suspicious finding might be a clue to diagnose malignancy.
    No preview · Conference Paper ·
  • Jin Kyung An · Hyun Sook Kim · Seok Hoon Lee · Chang-Yul Han
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    ABSTRACT: PURPOSE/AIM 1. To illustrate the imaging findings of various masses in head and neck manifesting symptomatic palpable lesions. 2. To correlate the imaging findings of head and neck masses with pathology. CONTENT ORGANIZATION •Review about proper evaluation methods - Merits and Demerits of each method •Review of imaging findings - Typical and Atypical findings - Differentiation points - Pathology correlations •Sample cases - epidermal cyst, tuberculosis, tortuous vessel, lymphoma, pilomatricoma, trichilemmal cyst, trichoepithelioma, lipoma, lymphangioma, papillary carcinoma arising from the thyroglossal duct cyst, pleomorphic adenoma, Warthin’s tumor, cystic dermoid, and schwannoma •Summary SUMMARY 1. Palpable head and neck masses are commonly encountered in clinical field. Therefore, radiologist should be familiar with these conditions and proper evaluation methods. 2. Imaging provides important information about location, extent, and interventional procedures. 3. Sonography is very useful primary tool for the evaluation of these conditions.
    No preview · Conference Paper ·