• Asian Pacific Journal of Cancer Prevention
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• v.13 no.11
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• pp.5729-5733
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• 2012

Background and Objectives: This study aimed to present the clinicopathological characteristics and treatment of patients with bladder carcinoma with sarcomatoid differentiation at our institution. Methods: Between 1995-2009, 950 patients were followed-up for bladder carcinoma. Among them, 14 patients with sarcomatoid carcinoma were retrospectively reviewed, and their clinical, pathological features and treatment were recorded. Results: Median age of the patients was 65 years (range: 41-86 years), 12 (86%) being male and 2 (14%) female. All the patients presented with hematuria and 11 (88%) had a history of smoking. The tumor growth pattern was solid in 10 patients, papillary in 2, and mixed in 2. In all, 5 of the patients had urothelial carcinoma with sarcomatoid differentiation and 9 were diagnosed with sarcomatoid carcinoma. Five patients underwent radical cystectomy with ileal conduit surgery, 2 patients refused cystectomy, and 8 patients underwent re-TUR. Following diagnosis, 12 of the patients died in mean 10.7 months (range: 1-48 months). Conclusion: Urothelial carcinomas with sarcomatoid features are aggressive and are usually at advanced stage at the time of diagnosis. The outcomes of multimodal treatment are not satisfactory. Significant findings of the present study are that early diagnosis positively affect survival and that gemcitabine and cisplatin in combination can positively affect survival.

• The Korean Journal of Cytopathology
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• v.9 no.2
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• pp.147-153
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• 1998

We have investigated the cervicovaginal smears in order to define the cytologic features of uterine adenocarcinomas. Total 22 cases were reviewed(12 cases from the Sanggye Paik hospital, Inje university and 10 cases from the Korea Cancer Center Hospital) from January 1992 to December 1997. Five cases were endometrial adenocarcinomas and the remaining 17 cases were cervical adenocarcinomas. Seventeen cases of cervical adenocarcinomas were divided into endometrioid(6 cases), endocervical(7 cases), mixed endometrioid and endocervical(1 case), papillary (2 cases), and adenosquamous(1 case) carcinomas. The background of endocervical adenocarcinoma was hemorrhagic or inflammatory. The tumor diathesis was less prominent than that of the squamous cell carcinoma. The prominent features of the endocervical type adenocarcinomas were large and loose clusters, large intracytoplasmic vacuoles, and prominent overlapping and peripheral palisading of nuclei. In contrast, the endometrioid adenocarcinomas showed small and compact clusters, and small intracytoplasmic vacuoles. The detection rate of endometrial adenocarcinoma was lower than that of the endocervical adenocarcinoma.

• The Korean Journal of Cytopathology
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• v.9 no.2
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• pp.181-185
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• 1998

Polymorphous low grade adenocarcinoma(PLGA) is a rare malignant tumor of the salivary gland. It is characterized by diverse histology, bland-locking cytology indolent behavior and favorable prognosis. The fine needle aspiration cytologic features of PLGA are described. The aspirates from the hard palate in a 33-year-old woman showed cellular smear composed of monotonous small round to oval cells with scanty cytoplasm. Papillary, tubular and cell ball arrangements with characteristic dense stromal spheres were recognized. PLGA could be suggested by fine needle aspiration cytology, if one encountered cellular smear with various architectures and uniform bland-locking cytologic feature.

• Korean Journal of Head & Neck Oncology
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• v.9 no.1
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• pp.33-41
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• 1993

A multivariate analysis of the prognostic factors and five year survival rate was carried out on a series of 72 thyroid cancers treated surgically from 1980 to 1987 and followed for 1 to 11 years. The prognosis of the disease was significantly influenced by age at diagnosis, extracapsular invasion, angioinvasion and pathologic type, but the disease was not influenced by sex, lymph node metastasis, and 'risk' category. The overall five year survival rate was 89.7%. Six patients were dead of tumor after surviving for six months to two and half years, and the cause of death was local recurrence in three, lung metastasis in two and bone metastasis in one patient. Five year survival rate in age above fifty, presence of capsule and angioinvasion, follicular carcinoma, and extrathyroidal lesion was significantly shorter than that of patients with age below fifty, absence of capsule and angioinvasion, papillary carcinoma, and intrathyroidal lesion. Patients at low risk or with small carcinomas had long survival over 5 years with only lobectomy. Lymph node dissection was done with a limited type in no jugular metastasis, radical neck disscetion was performed only therapeutically in proved jugular node metastasis. Thyroid hormone was administered for the period of 3 to 5 years to suppress endogenous TSH production.

• The Korean Journal of Cytopathology
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• v.8 no.2
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• pp.143-149
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• 1997

Salivary duct carcinoma is rare high grade adenocarcinoma, arising from larger excretory duct in major salivary gland, resembling the ductal carcinoma of the breast histologically. We report a case of salivary duct carcinoma of left parotid gland in which fine needle aspiration cytology was performed. Cytologic examination revealed 1) moderate cellularity, 2) flat sheets or three dimensional, tightly cohesive clusters on the necrotic background, 3) sometimes cribriform or papillary configuration, 4) polygonal or cuboidal cells with moderate anisonucleosis with abundant, granular and eosinophilic cytoplasm, 5) round to oval nuclei with irregular chromatin clumps, and 6) 1 or 2 inconspicuous nucleoli. Histologically, the tumor is mainly composed of cribriform intraductal component with central comedonecrosis, and small foci of infiltrating component including well differentiated ductal structures or irregular sheets in a desmoplastic stroma.

• The Journal of Internal Korean Medicine
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• v.29 no.3
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• pp.595-607
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• 2008

Objectives: The aim of this study was to determine the effects of Salvia miltiorrhiza (SM) extract in urethane-induced lung tumorigenesis in A/J mice. Methods : We examined change of body weight, histological, apoptosis, immunohistochemical and gene expression of cyclooxygenase (COX-2) in lung tumors. Mice were divided into 3 groups: normal, saline, and experimental group administered SM extract after injection with urethane. Results : Histological observation showed shrunken alveoli in the control group, but recovered from damage in the SM extract administered group. The COX-2 positive materials were observed in the smooth muscle of terminal bronchiole and alveoli from the control group, but these positive materials decreased in the SM extract treatment group. The results of electron microscopical observation, dilated capillary and degenerated endothelia were observed in the control group. The apoptotic nuclei increased more in the control group compared with the normal and SM extract administered groups. Serial sections of the whole lung showed solid and papillary tumors. The size and number of tumors decreased in the SM groups compared with the control groups. Conclusions : These results suggest the possibility that SM may exert an anti-tumor effect on urethane-induced lung tumorigenesis.

• The Korean Journal of Cytopathology
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• v.18 no.1
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• pp.74-80
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• 2007

Parathyroid tumors may be difficult to distinguish from thyroid follicular lesions, especially when a tumor is nonfunctioning. We report here two cases of asymptomatic parathyroid carcinoma preoperatively misdiagnosed as thyroid follicular lesions, and one case of parathyroid adenoma showing hyperparathyroidism, and review the cytologic features favoring the diagnosis of parathyroid neoplasm. The cytologic findings that are characterized by clean background, monomorphic small cells, cohesive three-dimensional papillary clusters, small tight clusters with scattered naked nuclei, and well-defined clear cytoplasm favor a diagnosis for the parathyroid lesions. Cytologic findings such as macrofollicular structure, presence of colloid and macrophages, and presence of perivacuolar cytoplasmic granules on May-Grunwald-Giemsa stain support a diagnosis of a thyroid follicular lesion. The cytomorphology of parathyroid tumors is so variable that the distinction from a thyroid lesion cannot be based on the presence or absence of a single feature only but on the cytologic features as a whole.

• Korean Journal of Head & Neck Oncology
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• v.35 no.1
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• pp.41-44
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• 2019

Intraductal papilloma is an extremely rare benign tumor especially when it arises from major salivary gland. Recently, we experienced a case of an intraductal papilloma arising from the parotid gland in a 51-year-old woman. The radiologic finding showed lobulated enhancing and cystic solid mass in the left parotid superficial lobe. Superficial parotidectomy was performed. Pathological findings showed papillary proliferations with fibrovascular cores lined with bland cuboidal or columnar epithelial cells, and immunohistochemical stain results were consistent with intraductal papilloma. We report a case of intraductal papilloma in parotid gland with a review of literature.

• Journal of the Korean Society of Radiology
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• v.81 no.5
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• pp.1164-1174
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• 2020

Purpose To evaluate a deep learning model to predict recurrence of thyroid tumor using preoperative ultrasonography (US). Materials and Methods We included representative images from 229 US-based patients (male:female = 42:187; mean age, 49.6 years) who had been diagnosed with thyroid cancer on preoperative US and subsequently underwent thyroid surgery. After selecting each representative transverse or longitudinal US image, we created a data set from the resulting database of 898 images after augmentation. The Python 2.7.6 and Keras 2.1.5 framework for neural networks were used for deep learning with a convolutional neural network. We compared the clinical and histological features between patients with and without recurrence. The predictive performance of the deep learning model between groups was evaluated using receiver operating characteristic (ROC) analysis, and the area under the ROC curve served as a summary of the prognostic performance of the deep learning model to predict recurrent thyroid cancer. Results Tumor recurrence was noted in 49 (21.4%) among the 229 patients. Tumor size and multifocality varied significantly between the groups with and without recurrence (p < 0.05). The overall mean area under the curve (AUC) value of the deep learning model for prediction of recurrent thyroid cancer was 0.9 ± 0.06. The mean AUC value was 0.87 ± 0.03 in macrocarcinoma and 0.79 ± 0.16 in microcarcinoma. Conclusion A deep learning model for analysis of US images of thyroid cancer showed the possibility of predicting recurrence of thyroid cancer.

• Nuclear Medicine and Molecular Imaging
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• v.40 no.1
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• pp.9-15
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• 2006

Purpose: Previous studies have not showed consistent results for the level of expression of sodium/iodide symporter (NIS) in thyroid diseases, especially malignant tumor. We undertook this study to evaluate the distribution of NIS expression in malignant thyroid diseases and compare with that in benign thyroid disease. Materials and Methods: Total patients were 119 cases (Men 15, $48{\pm}13$ yrs). Total number of samples were 205 pieces. In malignant thyroid disease, there were 153 samples: 90 in papillary carcinoma, 4 in follicular carcinoma, 2 in medullary carcinoma and 57 in metastatic lymph node. In benign thyroid disease, there were 52 samples: 36 in goiter/cyst, 11 in thyroiditis and 5 in follicular adenoma. Using immunohistochemical methods, we probed 205 samples with monoclonal anti-NIS Ab. Grading of staining was stored as 0 (negative or absent), 1 (weakly positive), 2 (moderately positive) or 3 (strongly positive). Expression rate (ER) of NIS positivity in individual disease entity was expressed as percentage of total number divided by number in 2 plus 3 grade. Results: ERs of malignant thyroid diseases were 63% in papillary carcinoma, 81% in metastatic lymph node, 71% in follicular carcinoma and 100% in medullary carcinoma. ERs of benign thyroid disease were 53% in goiter/cyst, 64% in thyroiditis and 40% in follicular adenoma. ER of malignant thyroid diseases was higher than benign thyroid diseases (71% vs 54%). Grading of NIS expression in papillary carcinoma or goiter/cyst was heterogeneously distributed in considerable cases. Normal tissue also showed heterogeneous distribution of NIS expression, which was not correlated with that of primary lesion. Conclusion: In papillary thyroid carcinoma, distribution of NIS expression was heterogeneous and increased, and not different compared with that of benign thyroid disease.