Recently the rate of adolescent smoking in Korea has increased rapidly, and various health problems related to smoking can be expected to increase in the future. Studies on smoking behavior report that assertiveness is important factor influencing on the adolescent smoking. PURPOSE: This study was conducted to develope a educational video for the purpose of adolescent's smoking prevention. METHOD: The 533 participating subjects, 269 in experimental group and 264 control group, in the study were 7th grade students. The content of video introduces three smoke tempting situations. The experimental group received 17 minute video education, and the control group did not receive any treatments. RESULT: The results show that the student's assertiveness was increased significantly in the experimental group after the video education. Student's attitude on smoking became more negative in the experimental group. However, in the control group, the intention, assertiveness, attitude was not changed. CONCLUSION: This assertiveness video can be useful educational resource for the smoking prevention program for adolescents. Also further study on longitudinal effect and application on drinking, drug abuse are needed.
Adolescent* ; Assertiveness ; Drinking ; Education ; Humans ; Intention ; Korea ; Smoke* ; Smoking* ; Substance-Related Disorders

Small round cell tumors (SRCTs) are a heterogeneous group of neoplasms composed of small, primitive, and undifferentiated cells sharing similar histology under light microscopy. SRCTs include Ewing sarcoma/peripheral neuroectodermal tumor family tumors, neuroblastoma, desmoplastic SRCT, rhabdomyosarcoma, poorly differentiated round cell synovial sarcoma, mesenchymal chondrosarcoma, small cell osteosarcoma, small cell malignant peripheral nerve sheath tumor, and small cell schwannoma. Non-Hodgkin\'s malignant lymphoma, myeloid sarcoma, malignant melanoma, and gastrointestinal stromal tumor may also present as SRCT. The current shift towards immunohistochemistry and cytogenetic molecular techniques for SRCT may be inappropriate because of antigenic overlapping or inconclusive molecular results due to the lack of differentiation of primitive cells and unavailable genetic service or limited moleculocytogenetic experience. Although usage has declined, electron microscopy (EM) remains very useful and shows salient features for the diagnosis of SRCTs. Although EM is not always required, it provides reliability and validity in the diagnosis of SRCT. Here, the ultrastructural characteristics of SRCTs are reviewed and we suggest that EM would be utilized as one of the reliable modalities for the diagnosis of undifferentiated and poorly differentiated SRCTs.
Chondrosarcoma, Mesenchymal ; Cytogenetics ; Diagnosis ; Gastrointestinal Stromal Tumors ; Genetic Services ; Humans ; Immunohistochemistry ; Lymphoma ; Melanoma ; Microscopy ; Microscopy, Electron ; Microscopy, Electron, Transmission* ; Neurilemmoma ; Neuroblastoma ; Neuroectodermal Tumors ; Osteosarcoma ; Pathology ; Peripheral Nerves ; Reproducibility of Results ; Rhabdomyosarcoma ; Sarcoma, Myeloid ; Sarcoma, Synovial

Herein, we report a case of micronodular thymoma with lymphoid stroma in a previously healthy 73-year-old male. Thymectomy was performed. The solid and macrocystic masses were encapsulated with focal invasion. The solid portion consisted of nodules of bland-looking spindle or round epithelial cells in lymphoid stroma containing prominent germinal centers. The epithelial cells had moderate amount of cytoplasm and occasional mucin production. The cystic portion was lined with cuboidal epithelium. According to World Health Organization (WHO) classification, the mass was diagnosed as a micronodular thymoma with lymphoid stroma accompanied by a pre-existing multilocular thymic cyst. Micronodular thymoma with lymphoid stroma, a possible variant of type A thymoma, is an extremely rare tumor. This so-called "unusual" variant may imply the schematic weakness of the current WHO classification that cannot cover all morphologic types. Further study is recommended for clarification of this variant and its incorporation into the current classification.
Cytoplasm ; Epithelial Cells ; Epithelium ; Germinal Center ; Humans ; Lymphoid Tissue ; Male ; Mediastinal Cyst ; Mucins ; Thymectomy ; Thymoma ; World Health Organization

Myoepithelioma is a rare benign tumor of salivary gland myoepithelial cells, most commonly as a spindle subtype. Here, we present two cases of fine needle aspiration cytology of plasmacytoid myoepithelioma arising from a parotid gland and a hard palate. Aspirates showed plasmacytoid cells with pink-staining, homogeneous, abundant eosinophilic cytoplasm eccentrically displacing the nucleus in cohesive and dissociated forms. Rarely, nuclear grooves and intranuclear cytoplasmic inclusions were evident. These unfamiliar cytologic findings of uncommon myoepithelioma often cause diagnostic difficulties in preoperative aspiration cytology. Recognition of those rare findings provides a reliable diagnostic clue.
Biopsy, Fine-Needle ; Cytoplasm ; Eosinophils ; Inclusion Bodies ; Myoepithelioma ; Palate, Hard ; Parotid Gland ; Salivary Gland Neoplasms ; Salivary Glands

Eosinophilic fasciitis is a scleroderma-like disease and it may present with paraneoplastic syndrome or as an isolated form of the disease. We report here on a case of eosinophilic fasciitis in a 20-year-old woman who presented with an abrupt onset of subcutaneous limb swelling and peripheral eosinophilia. Pathologically, the specimen was characterized by acute inflammation and thickening of the collagen bundles in the reticular dermis and superficial muscle fascia in addition to the overlying intraepidermal blisters that contained many eosinophils. Eosinophils, some lymphocytes and plasma cells were infiltrated in the superficial muscle fascia and subcutaneous fat. The diagnosis of eosinophilic fasciitis was confirmed by biopsy. It is intriguing that eosinophilic fasciitis showed the microscopic findings of intraepidermal blister with predominant inflammation, and the patient showed a good response to steroid therapy.
Biopsy ; Blister ; Collagen ; Dermis ; Eosinophilia ; Eosinophils ; Extremities ; Fascia ; Fasciitis ; Female ; Humans ; Inflammation ; Lymphocytes ; Muscles ; Panniculitis ; Paraneoplastic Syndromes ; Plasma Cells ; Subcutaneous Fat ; Young Adult

BACKGROUND: Pulmonary vessel sarcomas are rare, and their pathogenesis is still unclear. METHODS: We focus on the pathologic findings of fourteen pulmonary artery and/or vein sarcomas along with clinical prognosis. RESULTS: Nine patients were male and five were female, and they ranged in age from 26 to 72 years (mean, 47 years). There were ten cases of pulmonary artery sarcoma, three cases of pulmonary artery and vein sarcoma, and one case of pure pulmonary vein sarcoma. Ten out of the fourteen cases were associated with pulmonary thromboembolism. Microscopically, all the tumors showed an undifferentiated sarcomatous portion. There were leiomyosarcoma portions in 8 cases, malignant fibrous histiocytomatous portions in 7 cases, angiosarcomatous differentiation in 3 cases, and osteosarcomatous portion in 1 case. All but two patients died during the follow up period (range, 1 to 78 months). The mean survival time of the patients who died was 14 months and the longest survival time was 78 months after surgical resection. CONCLUSIONS: The current study is one of the largest single institutional reviews of pulmonary artery and/or vein sarcoma. Regardless of the histological components and macroscopic growth patterns, these rare tumors have a grave prognosis.
Female ; Follow-Up Studies ; Glycosaminoglycans ; Humans ; Leiomyosarcoma ; Male ; Prognosis ; Pulmonary Artery ; Pulmonary Embolism ; Pulmonary Veins ; Sarcoma ; Survival Rate ; Veins

Desmoid tumor (fibromatosis) is a histologically benign fibrous neoplasm showing locally infiltrating growth. This type of tumor commonly occurs in the abdomen, but intrathoracic desmoid tumor is uncommon. To date, 12 cases of intrathoracic desmoid tumor protruding into the pleural cavity, radiologically mimicking pleural masses, have been reported. Here, we report on a case of intrathoracic desmoid tumor protruding into the pleural cavity, and partially covered by parietal pleura. The main preoperative differential diagnoses included pleural solitary fibrous tumor, inflammatory pseudotumor or malignant mesothelioma. A near-total mass excision was performed. Pathologically, the tumor was composed of a paucicellular arrangement of spindle-shaped cells with fibromyxoid stroma. The resection margin was partially involved with spindle cells present. On histochemical staining, the spindle cells were strongly positive for vimentin and negative for CD34, consistent with a desmoid tumor. The patient was stable without further adjuvant treatment during 6-years of follow-up.
Abdomen ; Diagnosis, Differential ; Fibromatosis, Abdominal ; Fibromatosis, Aggressive ; Follow-Up Studies ; Granuloma, Plasma Cell ; Humans ; Mesothelioma ; Pleura ; Pleural Cavity ; Solitary Fibrous Tumors ; Vimentin

Desmoid tumor (fibromatosis) is a histologically benign fibrous neoplasm showing locally infiltrating growth. This type of tumor commonly occurs in the abdomen, but intrathoracic desmoid tumor is uncommon. To date, 12 cases of intrathoracic desmoid tumor protruding into the pleural cavity, radiologically mimicking pleural masses, have been reported. Here, we report on a case of intrathoracic desmoid tumor protruding into the pleural cavity, and partially covered by parietal pleura. The main preoperative differential diagnoses included pleural solitary fibrous tumor, inflammatory pseudotumor or malignant mesothelioma. A near-total mass excision was performed. Pathologically, the tumor was composed of a paucicellular arrangement of spindle-shaped cells with fibromyxoid stroma. The resection margin was partially involved with spindle cells present. On histochemical staining, the spindle cells were strongly positive for vimentin and negative for CD34, consistent with a desmoid tumor. The patient was stable without further adjuvant treatment during 6-years of follow-up.
Abdomen ; Diagnosis, Differential ; Fibromatosis, Abdominal ; Fibromatosis, Aggressive ; Follow-Up Studies ; Granuloma, Plasma Cell ; Humans ; Mesothelioma ; Pleura ; Pleural Cavity ; Solitary Fibrous Tumors ; Vimentin

Adrenocortical carcinoma is a rare neoplasm and it has an invariably lethal prognosis. We report here on the fine needle aspiration cytologic findings of a solitary metastatic pulmonary adrenocortical carcinoma in a 24-year-old woman. The aspirate smears were very cellular and they were composed of a monomorphic population of large polyhedral cells with abundant granular or vacuolated cytoplasm, and the cells were predominantly singly scattered in a necrotic background. Multinucleated pleomorphic tumor cells were also found. Pleomorphic nuclei with thickened nuclear membranes were impinging on the cell membranes. Mitotic activity was occasionally seen. The cytologic findings of pleomorphic cells with microvacuolated cytoplasm and the presence of vague gland-like sheets, as well as the patient's history of undergoing adrenalectomy for primary adrenocortical carcinoma helped the pathologist reach the diagnosis of metastatic adrenocortical carcinoma. Here, we focus on the cytologic differential points of metastastic pulmonary adrenocortical carcinoma and primary pulmonary carcinoma, especially large cell carcinoma.
Adrenalectomy ; Adrenocortical Carcinoma ; Biopsy, Fine-Needle ; Carcinoma, Large Cell ; Cell Membrane ; Cytoplasm ; Female ; Humans ; Lung ; Lung Neoplasms ; Neoplasm Metastasis ; Nuclear Envelope ; Prognosis ; Young Adult

Adrenocortical carcinoma is a rare neoplasm and it has an invariably lethal prognosis. We report here on the fine needle aspiration cytologic findings of a solitary metastatic pulmonary adrenocortical carcinoma in a 24-year-old woman. The aspirate smears were very cellular and they were composed of a monomorphic population of large polyhedral cells with abundant granular or vacuolated cytoplasm, and the cells were predominantly singly scattered in a necrotic background. Multinucleated pleomorphic tumor cells were also found. Pleomorphic nuclei with thickened nuclear membranes were impinging on the cell membranes. Mitotic activity was occasionally seen. The cytologic findings of pleomorphic cells with microvacuolated cytoplasm and the presence of vague gland-like sheets, as well as the patient's history of undergoing adrenalectomy for primary adrenocortical carcinoma helped the pathologist reach the diagnosis of metastatic adrenocortical carcinoma. Here, we focus on the cytologic differential points of metastastic pulmonary adrenocortical carcinoma and primary pulmonary carcinoma, especially large cell carcinoma.
Adrenalectomy ; Adrenocortical Carcinoma ; Biopsy, Fine-Needle ; Carcinoma, Large Cell ; Cell Membrane ; Cytoplasm ; Female ; Humans ; Lung ; Lung Neoplasms ; Neoplasm Metastasis ; Nuclear Envelope ; Prognosis ; Young Adult