Kyung-Young Kim

Plasmablastic lymphoma (PBL) is a recently identified entity that is considered to be a type of diffuse large B-cell lymphoma with a unique immunophenotype and a predilection for the oral cavity of patients with the human immunodeficiency virus (HIV). Although its clinical features may help in the differential diagnosis, an extraoral location in a patient without HIV makes it more difficult to suspect clinically. This case report is the first to describe a patient with PBL originating from the j

We report a case of huge pulmonary chondroid hamartoma with multilocular cysts in a 38-yr-old male patient. The lobectomy specimen of the left lower lobe showed a large multilocular cystic mass, 11.5×10 cm in size. The mass had thin-walled, variable-sized cysts and areas of solid cartilaginous small nodules in the interstitium, which occupied the superior segment and the upper portion of the basal segment. There was no connection with bronchus or vessel. Microscopically, the cysts and cleft-like

The incidence of lymphangiomas in the gastrointestinal tract is low, particularly in the colon and rectum, and most cases are solitary. Lymphangiomatosis of the colon are encountered infrequently with only one report in the English literature, and polypectomy was performed for the diagnosis in that case report. However, trends in the diagnosis of lymphangiomatosis of colon have been changing since the development of endoscopic ultrasonography (EUS), and this case is the first in that lymphangiom

Pulmonary adenocarcinoma is a common malignancy that often involves calcification; however, bone formation in primary lung adenocarcinoma is extremely rare. In ten cases of primary pulmonary adenocarcinoma with heterotopic ossification, we detected immunoreactivity against TGF-β1, osteopontin, osteocalcin and Runx2 in the fibroblastic stroma and tumor cells within the area of ossification. Our results suggest that in primary pulmonary adenocarcinoma, heterotopic ossification occurs via intramemb

Pulmonary toxicity is one of the most serious adverse effects associated with a quick course of vincristine, bleomycin, and cisplatin neoadjuvant chemotherapy (NACVBP). The aim of this study was to evaluate pulmonary toxicity related to a quick course NAC-VBP. A total of consecutive 61 patients, who underwent at most 3 cycles of NAC-VBP every 10 days in the International Federation of Gynecology and Obstetrics (FIGO) stage IB-IIB cervical cancer from 1995 to 2007, were retrospectively analyzed.

Background: Analysis of mutations in the epidermal growth factor receptor gene (EGFR) is important for predicting response to EGFR tyrosine kinase inhibitors. The overall rate of EGFR mutations in Korean patients is variable. To obtain comprehensive data on the status of EGFR mutations in Korean patients with lung cancer, the Cardiopulmonary Pathology Study Group of the Korean Society of Pathologists initiated a nationwide survey. Methods: We obtained 1,753 reports on EGFR mutations in patients

PurposeThe novel heat shock protein tumor necrosis factor receptor-associated protein 1(TRAP1) is associated with multidrug resistance in colorectal cancer (CRC) cells invitro. Excision repair cross-complementation group 1 (ERCC1) expression levels intumor tissues also predict clinical outcomes in metastatic CRC patients receivingcombination oxaliplatin and 5-fluorouracil treatment. We investigated whether TRAP1and ERCC1 protein expression by immunohistochemistry predict clinical outcomes inCRC

Background: Scar tissue formation is the major cause of failure in peripheral nerve surgery. Use of a hyaluronic acid-carboxymethylcellulose(HA-CMC) membrane (Seprafi lm) as a solid anti-adhesion barrier agent is one of the therapeutic approaches toreduce postoperative scar tissue formation. However, a solid membrane may not be suitable for repair of a weak peripheral nervesite. This study examined the effect of HA-CMC solution on perineural scar formation after peripheral nerve repair in rats.

Background : Embryonic lethal abnormal vision (ELAV)-like protein HuR is known to stabilize mRNA through binding AU-rich elements in the 3’-untranslated region. Recent studies show that HuR expression is associated with the expression of several genes including cyclooxygenase- 2 (COX-2). HuR exists predominantly in the nucleus, but cytoplasmic translocation of HuR is thought to be more important for its activity. COX-2 is a well-known enzyme that promotes tumor growth. Methods : To evaluate the

The recent WHO classification has recognized mucinous tubular and spindle cell carcinoma (MTSCC) as a distinct entity of renal cell carcinoma, exhibiting a mixed pattern of tubules and a surrounding spindle cell proliferation within a myxoid stroma, with low-grade nuclear features. A 51-year-old woman had an incidentally discovered renal mass. Radiologic examination revealed a large, well defined mass in the lower pole of the right kidney; a right radical nephrectomy was performed. Imprint cytol

Gastric inflammatory fibroid polyps (IFP) are rare benign entities that are usually encountered in the gastric antrum. The authors report the CT findings of a gastric IFP case experiencing marked growth over a five-month period. An initial CT revealed a polypoid wall thickening of about 3.5×2.5 cm in the gastric antrum. A follow-up CT performed five months later revealed a cauliflower-like submucosal mass of about 8×5 cm. The mass was surgically excised and confirmed as an IFP. The authors sugge

Background : Epithelial tumor cells with a CD44+/CD24-/low immunoprofile may have the ability to cause breast cancer. We studied these cells and their clinicopathological significance. Methods : The clinicopathologic findings of 100 invasive ductal carcinoma (IDC) cases and 45 ductal carcinoma in situ (DCIS) cases were reviewed. CD44+/CD24-/low tumor cells were identified by immunohistochemistry, and their clinicopathological implications in IDC and DCIS were analyzed. Results : IDC with a high

Intrathyroidal thymic tissue is rare and may be confused with a malignant thyroid nodule because of hyperechoic dots mimicking calcifications. We report the case of a thyroid nodule with malignant ultrasonographic findings in a 4-year-old child, which was confirmed cytologically as ectopic thymic tissue. The sonographic findings of ectopic thymus were similar to those of the thymus; therefore, clinicians should be familiar with ultrasonography findings of normal thymic tissue.