The trichofolliculoma is a rare tumor of the hair follicle occuring most often on the head and neck. We have experienced a case of 24-year-old female who had a small, dome-shaped, tan brown firm nodule on the nose. Under the clinical impression of a granuloma, an excisional biopsy of the nodule was done. Microscopically the lesion was composed of a large central cystic hair follicle with many srhall but well differenciated secondary hair follicles branching from the wall. Well developed secondary hair follicles were often grouped and were surrounded by a prominent stroma.
Female ; Humans ; Biopsy

Lymphoid tumors of the orbit are rare, and sometimes it is not possible either clinically or histologically to differentiate between lymphoid tumor and pseudolymphoma. Some authors assert that the degree of cytologic differentiation appears to be the single most important factor for determining the prognosis of patients with orbital lymphoid lesions. However, the cytomorphologic basis is not so helpful to diagnose and classify our case, which shows some discrepancy between pathological findings and clinical and radiological findings. At first we misdiagnosed our case as orbital malignant lymphoma on the basis of cytomorphology and immunohistochemical study. But no responce to local intensive radiotherapy and the follow up study of the patient suggest orbital pseudolymphoma.
Follow-Up Studies

Strumal carcinoma of the ovary is rare tumor of germ cell origin characterized by intimate mixture of thyroid tissue and carcinoid. We report a strumal carcinoid tumor associated with ipsilateral follicular cyst and contralateral mature cystic teratoma of the ovary in a 47-year-old woman. Histologically it was composed largely of trabeculae partly of insular carcinoid and focally of individual thyroid follicles. Many cells in the carcinoid areas and even some follicular areas contained abundant argyrophile granules, and they also, in the corresponding areas, demonstrated thyroglobulin. Electron microscopic findings revealed abundant neurosecretory granules and colloid material in the same cell. We agree that this tumor is derived from hybrid showing thyroid and neuroendocrine differenciation.
Female ; Humans ; Cysts

Testosterone is required for the development and maintenance of the male accessory sex organs and their normal function. And it was reported that castration affect cells in the adult male rat accessory sex glands by induction of programmed cell death (apoptosis). So, in this study, the authors made an experiment to evaluate the effect of testosterone in the maure male rat penis and accessory sex glands following castration. Also, we utilized actinomycin D, a potent inhibitor of messenger and ribosomal RNA synthesis, in the experiment herein to assess the significance of regression process in the glands. Following are the changes in the serum testosterone level, the weight of the penis, ventral prostate and seminal vesicles and apoptosis occurrence of the control (castration, castration normal saline) and experimental (castration AD25, castration AD50) group of mature rats. 1. After castration, the control group and the experimental group showed decreased level of serum testosterone. 2. In the both groups, the weight of the penis, ventral prostate and seminal vesicles decreased gradually. 3. Compared to the control group, the castration AD25 did not show the inhibition of castration induced regression of penis and ventral prostate. However, castration AD50 showed the inhibition. 4 In the H-E staining and ApoTag in situ staining, the ventral prostate showed the most prominent apoptosis occurrence followed by the seminal vesicles and penis. These results suggest that after castration of the mature rat, due to testosterone deficiency, the weight of penis, ventral prostate and seminal vesicles decreased with the occurrence of apoptosis. Also, actinomycin D 50 micrometer seems to delay the regression process.
Adult ; Animals ; Apoptosis ; Castration* ; Cell Death ; Dactinomycin ; Genitalia ; Humans ; Male ; Penis* ; Prostate ; Rats* ; RNA, Ribosomal ; Seminal Vesicles ; Testosterone*

Richer's syndrome is a development of a high grade malignant lymphoma in a patient with preexisting chronic 1ymphocytic leukemia, small lymphocytic lymphoma or Waldenstrom's macroglobulinemia. A rare case of Richer's syndrome arising in the spleen of a 35-year-old-man was studied by morphology, immunohistochemistry and gene rearrangement study. He has had weight loss and night sweat for last 6 months. Hepatosplenomegaly and abdominal lymphadenopathy were noted on CT scanning. Especially an ovoid radiolucent mass was found within the image of splenomegaly. Lymph nodes and liver biopsy, bone marrow aspiration and splenectomy were done. In the lymph nodes, liver and bone marrow, well differentiated small lymphocytic infiltrations were found but, in the spleen, pleomorphic, large cells with occasional multinucleated giant cells formed a nodular mass surrounded by diffuse, extensive infiltration of small well differentiated lymphocytes. The two distinctive areas in the spleen had positive staining for B-cell marker (HLA-DR and L26), negative staining for T-cell marker (UCLH1), and positive staining for IgM heavy chain and kappa light chain by immuohistochemical study. so this case was diagnosed as a diffuse large cell 1ymphoma transformed from small lymphocytic lymphoma. We made an another effort to clarify their clonality. Gene rearrangement method usingcomplementarity.determining region 3(CDR3) of immunoglobulin heavy chain (IgH) gene and T-cell receptor gamma (TCRgamma) gene by polymerase chain reaction (PCR) technique was done. The two lymphomas in the spleen demonstrated the same rearrangement pattern in both IgH and TCRgamma gene. We think these findings strongly suggest that the large cell lymphoma has the same clonality with that of the small lymphocytic lymphoma.
Male ; Humans

Epstein-Barr virus (EBV) establishes a latent infection in greater than 90% of the world's adult population and associates with various tumors. EBV primarily infects epithelial cells and B cell in vivo. Mechanism of EBV infection in B cells is known to involve binding of EBV glycoprotein gp350 to CD21 on B cell surface. Epithelial cells are infected with EBV even though most of epithelial cells do not express CD21. Recently, integrin alphavbeta5, alphavbeta6 and alphavbeta8 on epithelial cells were reported to facilitate EBV infection by interacting with gHgL complex. We examined the expression profile of integrins known to be expressed on epithelial cells. Integrin alphavbeta5 and alphavbeta6, but not alphavbeta8 were detected in a gastric epithelial cell line, AGS. We then tested whether siRNAs specific to beta6 can inhibit EBV infection of epithelial cells. One among the four tested siRNAs significantly reduced beta6 expression and suppressed transfer infection of EBV to AGS cells. Our data suggest that siRNAs to integrins might be useful to control EBV infection to epithelial cells.
Adult ; B-Lymphocytes ; Epithelial Cells ; Epstein-Barr Virus Infections ; Glycoproteins ; Herpesvirus 4, Human ; Humans ; Integrin beta Chains ; Integrins ; Receptors, Vitronectin ; RNA, Small Interfering

No abstract available.
Biopsy, Fine-Needle*

Purpose: The purpose of this study was to investigate the sleep duration, social jetlag (SJL), and subjective sleep disturbance according to the individual chronotype in rotating shift nurses. Methods: A total of 344 rotating 3-shift nurses (mean age 28.67 years) were recruited at one university affiliated hospital. They completed the following questionnaires, which were used to assess their chronotype and sleep: the morningness-eveningness questionnaire (MEQ), self-reported sleep duration of work days (SDW shift) and free days (SDF shift) in each shift (day [D], evening [E], night [N]), and sleep disturbance (Insomnia severity index, ISI). SJL shift was calculated as the difference in midsleep (MS = sleep onset+1/2 sleep duration) between work days (MSW) and free days (MSF). Results: Subjects were divided into 3 chronotype groups according to the MEQ; morning (MG, 4.4%) intermediate (IG, 57.8%), and evening groups (EG, 37.8%). SDW D was shortest (4.68 hr) and SDF E was longest (8.93 hr) in the EG. SJL D was longest in the EG (3.77 hr), and SJL N was longest in the MG (7.37 hr). The prevalence of sleep disturbance was 33.3% (MG), 29.6% (IG), and 40.0% (EG), respectively, without any statistical significance. Conclusion In order to improve the sleep of shift workers, it is recommended that the evening chronotypes should reduce the day shifts and the morning chronotypes should reduce the night shifts. We also propose a study to determine whether these shift assignments can improve the sleep in shift nurses.

Purpose: The purpose of this study was to investigate the sleep duration, social jetlag (SJL), and subjective sleep disturbance according to the individual chronotype in rotating shift nurses. Methods: A total of 344 rotating 3-shift nurses (mean age 28.67 years) were recruited at one university affiliated hospital. They completed the following questionnaires, which were used to assess their chronotype and sleep: the morningness-eveningness questionnaire (MEQ), self-reported sleep duration of work days (SDW shift) and free days (SDF shift) in each shift (day [D], evening [E], night [N]), and sleep disturbance (Insomnia severity index, ISI). SJL shift was calculated as the difference in midsleep (MS = sleep onset+1/2 sleep duration) between work days (MSW) and free days (MSF). Results: Subjects were divided into 3 chronotype groups according to the MEQ; morning (MG, 4.4%) intermediate (IG, 57.8%), and evening groups (EG, 37.8%). SDW D was shortest (4.68 hr) and SDF E was longest (8.93 hr) in the EG. SJL D was longest in the EG (3.77 hr), and SJL N was longest in the MG (7.37 hr). The prevalence of sleep disturbance was 33.3% (MG), 29.6% (IG), and 40.0% (EG), respectively, without any statistical significance. Conclusion In order to improve the sleep of shift workers, it is recommended that the evening chronotypes should reduce the day shifts and the morning chronotypes should reduce the night shifts. We also propose a study to determine whether these shift assignments can improve the sleep in shift nurses.

Huntington's disease(HD) is an autosomal dominantly inherited neurodegenerative disease, which is characterized by choreic movement and progressive dementia. HD is a disease caused by CAG repeat expansion of huntintin gene and definitely diagnosed or is excluded by molecular genetic analysis. Juvenile HD, of which onset is in children or young adult, is the most severely disabled type and shows several distinct clinical and genetic features in contrast to usual late-onset type. We report a 10 year-old girl who presented with involuntary movement, seizure and moderate dysarthria confirmed by molecular genetic analysis.
Child ; Chorea ; Dementia ; Dysarthria ; Dyskinesias ; Female ; Humans ; Molecular Biology ; Neurodegenerative Diseases ; Seizures ; Young Adult