The mucoepidermoid carcinoma is a rare tumor in the lung. A case of bronchial mucoepidermoid carcinoma diagnosed by fine needle aspiration cytology is presented. The smear showed many intermediate cells with occasional mucus-secreting cells. Malignant squamous cells were not present. The cellular arrangement of intermediate cells was overlapping and grouped in ball-like fashion. These cytologic features are unique for diagnosis of this tumor.
Biopsy, Fine-Needle ; Carcinoma, Mucoepidermoid ; Child* ; Diagnosis ; Glomerulonephritis* ; Humans ; Lung ; Mucoepidermoid Tumor

Hepatocellular carcinoma (HCC) is malignant tumor frequently occurring in Koreans. There have been few reports regarding the cytologic findings of fine needle aspiration (FNA) of HCC. Most have suggested a diagnostic problem in the cytology distinguishing HCC from some benign hepatic lesions-for example, a regeneration nodule in cirrhosis and liver cell adenoma. In spite of its high frequency in Korea, no cytologic study has been reported, concerning the FNA of HCC. In an attempt to achieve cytologic criteria for the diagnosis of HCC, the authors studied retrospectively cytopathologic findings of 247 cases of HCC. These cases were confirmed either by histologic examination including lobectomy, biopsy, or cell block materiai, or, when tissue diagnosis was unavailable, by a high serum alpha-fetoprotein level (over 400 l. U.). All aspiration smears were stained by the Papanicolaou method. In each case, the smears were analyzed for cell patterns and various cytomorphology of the tumor cells. The smear background was assessed for the presence of tumor cell necrosis and inflammatory components and compared to that of metastatic carcinomas. The cell patterns were classified as trabecular, acinar, dispersed, and irregular. The cytologic parameters analyzed included the degree of nuclear atypia and the presence of mitoses, intranuclear cytoplasmic inclusions, nucleolar prominency, endotheiial lining, multinucleated giant cells, eosinophiic globules, bile, and Mallory body.Most of the FNA of HCC showed markedly cellular smears. The tumor cells were most frequently arranged in a trabecular pattern (80.3%). The irregular (12.6%), the acinar (5.5%), and the dispersed patterns (1.7%) followed in decreasing frequency. Individual hepatoma cells were larger than normal liver cells. However, they had morphologic features characteristic of the hepatic cells: the cells were round or polygonal, their cytoplasm was abundant and granular with eosinophilic or amphophilic stainability, and their nuclei were round to oval, located centrally, and tended to have prominent nucleoli. Anaplasia and pleomorphism of tumor cells were generally mild to moderate. These findings existed even in very well differentiated cases. Mitotic figures were present in about 85% of the cases. Prominent nucleoli were observed only in about half the cases. The frequency of other cytologic features was as follows: intranuclear cytoplasmic inclusion in 86.8%; endothelial lining in 56.1%: bile in 19.8%; and giant cells in 60.1%. Clear cells were often present in11.7%, Most aspiration smears of HCC displayed clean background without necrosis or inflammatory material in contrast to the dirty, necrotic background of metastatic cancers and cholangiocarcinomas. Based on the above mentioned features, it is suqqested that the cytologic critieria most important for the diagnosis of HCC include a markedly cellular smear, trabecular pattern, hepatocytoid appearance of tumor cells, endothelial lining, the presence of bile, giant cells, intranuclear cytoplasmic inclusions, and prominent nucleoli, Among these, trabecular pattern, endothelial lining, giant cells and clean smear background are points to be considered in differentiating HCC from metastatic and cholangiocellular carcinoma.
Adenoma, Liver Cell ; alpha-Fetoproteins ; Anaplasia ; Bile ; Biopsy ; Biopsy, Fine-Needle ; Carcinoma, Hepatocellular ; Child* ; Cholangiocarcinoma ; Cytoplasm ; Diagnosis ; Endothelial Cells ; Eosinophils ; Fibrosis ; Giant Cells ; Glomerulonephritis* ; Hepatocytes ; Humans ; Inclusion Bodies ; Korea ; Liver ; Mitosis ; Necrosis ; Regeneration ; Retrospective Studies

Sirenomelia is a severe form of caudal regression syndrome that results in a fusion of the lower extremities, which is not compatible with life. A various spectrum of anomalies affecting primarily the musculoskeletal, genitourinary and gastrointestinal systems also can occur. This rare malformation has a reported incidence rate of approximately 1 in 60,000 births, with a range of 1 to 1 percent of all malformed infants. We experienced a sirenomelic case with combined anomalies of genitourinary, cardiovascular and gastrointestinal systems. Maternal obstetric history revealed oligohydramnios and intrauterine fetal growth retardation, and the baby was spontaneously delivered at 37 weeks of gestational age, but died I hour after birth.
Infant ; Male ; Female ; Humans ; Incidence

Inflammatory pseudotumor of the liver is a relatively rare entity, and frequently misdiagnosed as a malignant tumor. We report a case of inflammatory pseudotumor involving the liver in a 53year-old man. The liver function test and serum alpha-fetoprotein level were within normal range. His preoperative diagnosis was as hepatocellular carcinoma by radiologic studies, and ultrasonography guided fine needle aspiration cytology and biopsy were done but confirmative diagnosis of malignancy or pseudotumor was not given. Grossly a relatively well marginated reddish brown soft mass with focal hemorrhage, measuring 5.0 cm in the largest diameter, was noted in the left lobe of liver. Surrounding hepatic parenchyma was yellowish brown in color without cirrhosis. Microscopically the mass showed typical findings of inflammatory pseudotumor and the ing liver tissue revealed diffuse fatty change and moderate chronic inflammatory cell on in the portal areas.
Biopsy ; Carcinoma, Hepatocellular

Cystadenomas are benign neoplasm in which the epithelium demonstrates adenomatous proliferation. Several morphologic variants of cystadenomas have bean described, including papillary-oncocytic, mucous, and seromucous subtypes. Cystadenomas arising from salivary glands are very rare and seromucous cystadenoma of parotid gland has not been reported in Korea so far. Cystadenomas of the parotid gland usually Present as asymptomatic slowly growing mass and those of the minor salivary glands produce smooth nodules that may be compressible. We performed a superficial parotidectomy in a patient with a seromucous cystadenoma. This may be the first report of seromucous cystadenoma of carotid gland in Korea.
Cystadenoma* ; Epithelium ; Humans ; Korea ; Parotid Gland* ; Salivary Glands ; Salivary Glands, Minor

Histologic changes suggesting HPV infection are occasionally found adjacent to squamous cell carcinoma or in squamous papilloma of the esophagus, but the relationship between HPV infection and benign and malignant squamous lesions of the esophagus is not yet dear. The aim of this study was to examine the role of HPV in squamous lesions of the esophagus. Microscopic examination with emphasis on HPV infection was done on 15 cases of squamous cell carcinoma and 26 cases of squamous papilloma. In situ hybridization technique for wide-spectrum HPV probe was performed on 35 endoscopically biopsied esophageal tissues. Among the histologic parameters suggesting HPV infection, acanthosis was the most frequent finding: 100.0% in benign and malignant esophageal lesions, and koilocytosis and intraepithelial capillary loops were the second (92.7%).: Dyskeratosis, basal cell hyperplasia and bi- or multinucleation were 52.3%, 44.0% and 34.1% in frequency, respectively. On in situ hybridization study, the HPV DNA expression rates of 10 squamous cell carcinomas with evidence of HPV infection and 15 carcinomas without evidence of HPV infection were 60.0% and 33.3%, respectively. In contrast to the carcinoma cases, only one (10.0%) of 10 squamous papillomas revealed positive signal. In conclusion, HPV infection is strongly associated with squamous cell carcinoma, but the causal relation of HPV to squamous papilloma is inconspicous.
DNA, Viral/*analysis ; Esophageal Neoplasms/pathology/*virology ; Human ; *In Situ Hybridization ; Neoplasms, Squamous Cell/pathology/*virology ; Papillomavirus, Human/genetics/*isolation & purification ; Papovaviridae Infections/pathology/*virology ; Tumor Virus Infections/pathology/*virology

Histologic changes suggesting HPV infection are occasionally found adjacent to squamous cell carcinoma or in squamous papilloma of the esophagus, but the relationship between HPV infection and benign and malignant squamous lesions of the esophagus is not yet dear. The aim of this study was to examine the role of HPV in squamous lesions of the esophagus. Microscopic examination with emphasis on HPV infection was done on 15 cases of squamous cell carcinoma and 26 cases of squamous papilloma. In situ hybridization technique for wide-spectrum HPV probe was performed on 35 endoscopically biopsied esophageal tissues. Among the histologic parameters suggesting HPV infection, acanthosis was the most frequent finding: 100.0% in benign and malignant esophageal lesions, and koilocytosis and intraepithelial capillary loops were the second (92.7%).: Dyskeratosis, basal cell hyperplasia and bi- or multinucleation were 52.3%, 44.0% and 34.1% in frequency, respectively. On in situ hybridization study, the HPV DNA expression rates of 10 squamous cell carcinomas with evidence of HPV infection and 15 carcinomas without evidence of HPV infection were 60.0% and 33.3%, respectively. In contrast to the carcinoma cases, only one (10.0%) of 10 squamous papillomas revealed positive signal. In conclusion, HPV infection is strongly associated with squamous cell carcinoma, but the causal relation of HPV to squamous papilloma is inconspicous.
DNA, Viral/*analysis ; Esophageal Neoplasms/pathology/*virology ; Human ; *In Situ Hybridization ; Neoplasms, Squamous Cell/pathology/*virology ; Papillomavirus, Human/genetics/*isolation & purification ; Papovaviridae Infections/pathology/*virology ; Tumor Virus Infections/pathology/*virology

The present studies were carried out, under natural room condition from June to July in 1969. The period required for growth of eggs and larva varied according to various temperatures and methods of rearing. The average number of eggs laid by the Culex pipiens pallens was 137 per egg raft. The period of gonotrophic cycle was from 3 to 6 days: incubation period of eggs was from 1.5 to 2 days: larva period was from 10 to 14 days: pupa period was from 2 to 3 days. Accordingly, the period from the beginning of gonotrophic cycle to the adult mosquitos in next generation required 25 days at the longest and 16.5 days at the shortest.
parasitology-arthropodology-Culex pipiens pallens ; life cycle ; egg ; pupa ; larva ; mosquito

No abstract available.

No abstract available.