• Fisheries and Aquatic Sciences
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• 제1권1호
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• pp.68-71
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• 1998

The egg structure and shape of the skin parasite, Entobdella hippoglossi from the Atlantic halibut, Hippoglossus hippoglossus was examined using scanning electronic microscope. The newly produced eggs of E. hippoglossi were yellowish in color and tetrahedral in shape. The eggs were entwined together in a complicated chain-like fashion by a long filament. The appendage showed the presence of buoy-like structures. The buoy-like structures on the appendage of the eggs of E. hippoglossi in the present study were totally different from other sticky droplets. It is suggested that these structures are not sticky droplets but buoys for floating eggs which have entwined together on the bottom of the sea. It seems that these buoy-like structures may be needed for preventing the eggs from being covered by mud or particles and thus maintaining the eggs in an oxygenated environment.

• 대한두개안면성형외과학회지
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• 제22권2호
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• pp.126-130
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• 2021

Sebaceous neoplasms are rare adnexal tumors that can present a challenge to clinicians. Only four cases of sebaceous carcinoma with sebaceoma have been reported in the literature. Herein, we describe the case of a sebaceous carcinoma originating from a sebaceoma in a solitary nodule of the posterior neck. Immunohistochemically, the tumor cells were strongly positive for epithelial membrane antigen and p53. It is possible that adnexal carcinomas may arise from malignant transformation of their benign counterparts as well as de novo. Malignant transformation was likely in this case because the lesion was composed of distinct benign and malignant components, and the benign component showed the typical histopathological features of sebaceoma. This case underscores the fact that partial and superficial biopsies sometimes may not provide the correct diagnosis. If a surgeon suspects malignancy based on a clinical examination, then it is mandatory to perform a deep biopsy.

• 대한두개안면성형외과학회지
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• 제23권2호
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• pp.83-88
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• 2022

Nevus sebaceous of Jadassohn is a congenital cutaneous hamartoma with epidermal, sebaceous, follicular, and apocrine structures that usually appears at birth or in early childhood. It has the potential to generate a variety of secondary neoplasms of different lineages, and the risk increases with patient age. Although multiple neoplasms may occasionally arise within the same lesion, the coexistence of more than five secondary tumors is extremely rare. Here we report a case of seven secondary tumors including syringocystadenoma papilliferum, desmoplastic trichilemmoma, sebaceoma, trichoblastoma, pigmented trichoblastoma, sebaceous adenoma, and tumor of follicular infundibulum arising within a nevus sebaceous. The complete diagnosis relies on the histopathological analysis of multipoint biopsies and delicate pathological sections.

• 대한두개안면성형외과학회지
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• 제18권1호
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• pp.50-53
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• 2017

Trichilemmal cysts are common fluid-filled growths that arise from the isthmus of the hair follicle. They can form rapidly multiplying trichilemmal tumors-, also called proliferating trichilemmal cysts, which are typically benign. Rarely, proliferating trichilemmal cysts can become cancerous. Here we report the case of a patient who experienced this series of changes. The 27-year-old male patient had been observed to have a $1{\times}1cm$ cyst 7 years ago. Eight months prior to presentation at our institution, incision and drainage was performed at his local clinic. However, the size of the mass had gradually increased. At our clinic, he presented with a $5{\times}4cm$ hard mass that had recurred on the posterior side of his neck. The tumor was removed without safety margin, and the skin defect was covered with a split-thickness skin graft. The pathologic diagnosis was a benign proliferating trichilemmal cyst. The mass recurred after 4months, at which point, a wide excision (1.3-cm safety margin) and split-thickness skin graft were performed. The biopsy revealed a trichilemmal carcinoma arising from a proliferating trichilemmal cyst. This clinical experience suggests that clinicians should consider the possibility of malignant changes when diagnosing and treating trichilemmal cysts.

• 동의생리병리학회지
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• 제22권2호
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• pp.346-349
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• 2008

To investigate whether aqueous extract from Aconitum koreanum (AEAK) effects in the process of melanin synthesis, the expression of tyrosinase-related proteins (TRPs) by immunohistochemical methods were performed in ultraviolet B (UVB) irradiated skin of guinea pig. The irradiation of UVB (60 mJ/day) was performed for 3 days and treated with AEAK for 15 days. About the color evaluation, the visual scores of UV B irradiated guinea pig with AEAK treatment were slightly lower than those in the UV B alone irradiated ones. At day 15 after UVB exposure, immunohistochemical analysis for TRPs expression were performed. The intensive expression of tyrosinase was mainly observed over epidermis with skin appendage and in the cells of dermis. Slight increase of these reaction was induced in response to UVB in the spinous and granular layer of epidermis, but similar expression in the AEAK treated guinea pig as normal one. The TRP-1 and TRP-2 expression were not detected in the skin of normal guinea pig. But intensive expression for TRP-1 and TRP-2, especially TRP-2, induced by UV B irradiation in the cells of dermis. These expressions were decreased in the AEAK treated guniea pig. Collectively, these results suggest that AEAK has a potential to inhibit synthesis through regulation of TRPs expression in the skin of guinea pig, but better understanding the function of AEAK, more research should be done in the effects of AEAK on the function of TRPs in melanogesis.

• 한국의류산업학회지
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• 제13권3호
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• pp.398-408
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• 2011

This study shows that the self-satisfaction individually is rising and social life is attracted effective and successful in image making field by structuring the facial image improvement program through experimental study in order to improve unbalance of women's face. Experiment is conducted by electing 3 samples for 12 weeks and analyzing the measurement and visual analysis, infrared thermography, and evaluation of experts in order to check the facial unbalance. Subject 1 had the effect at approximately in 4 weeks with the severely distorted chin line and mouth appendage. The facial outline became softer to turn entire image to be softer and more feminine. Subject 2 had the severe distortion of location and size of eyes and nose. But the skin was getting better at first, followed by eyes getting clearer with the location changed in left and right. Subject 3 had the twisted nose and lower chin, but after two weeks, the eye area and skin were better and the width of left and right chin was similarly changed. On the basis of the above research result, the program to effectively improve the image was structured and presented with the resolution of facial unbalance. Program is consist of the training of breathing method, face washing method, facial muscle exercise.

• The Korean Journal of Pain
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• 제10권2호
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• pp.274-277
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• 1997

The complex regional pain syndrome(CRPS) exhibit symptoms such as: abnormal skin color, temperature change, abnormal pseudomotor activity, edema. If CRPS is not treated appropriately at acute stage, then the affected extremity may become a useless, painful appendage. Treatment of CRPS by sympathetic blockade may be achieved by repeated intravenous regional guanethidine blocks, repeated anesthetic sympathetic blocks, surgical sympathectomy or oral sympatholytic therapy. We treated 29-year-old male patient with CRPS of left upper extremity by continuous cervical epidural blockade. Due to wound infection and dislocation of the epidural catheter, we inserted an implantable port system to inject the mixture of local anesthetics and small amount of morphine. After 10 months of treatment, patient was cured of symptoms and signs of CRPS and was able to resume a normal life.

• Nuclear Engineering and Technology
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• 제28권3호
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• pp.280-289
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• 1996

The pressure drop of twelve fuel bundle string in the CANDU-6 fuel channel is equal to the sum of the eleven junction pressure losses, the bundle string entrance and exit pressure losses, the skin friction pressure loss, and other appendage pressure losses, where the junction loss is dependent on the bundle end faces and angular alignments of the junctions. The results of the single junction pressure drop tests in a short rig show that the most probable pressure drop of the eleven junctions was analytically equal to the eleven times of average pressure drop of all the possible single junction pressure drops, and also that the largest and smallest junction pressure drops across the eleven junctions probably occurred only with BA and BB type junctions, respectively, where A and B denote the bundle end sides with an end-plates on which a company monogram is stamped and unstamped, respectively.

• 한국어류학회지
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• 제22권2호
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• pp.96-104
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• 2010

멸조위기종인 묵납자루 Acheilognathus signifer의 종복원을 위한 인공수정을 실시하는 과정에서눈과 피부의 색소발현이 결여된 백색증 개체가 출현하였다. 정상 묵납자루와 백색증 개체간 색소발현과 형태의 차이여부를 알아보기 위하여 몸통, 지느러미 눈 등 총 10개 부위에 대한 조직학적 검사를 실시하였다. 그 결과 정상 묵납자루의 경우, 멜라닌세포는 빛에 쉽게 노출되는 등부위와 상미병부, 맥락막-망막색소상피층 및 홍채에서 다량으로 분포하였다. 반면에 백색증 개체에서는 멜라닌세포가 등 부위와 등지느러미, 그리고 꼬리지느러미에서 아주 소량으로 분포하고 있었으며 눈의 맥락막-망막색소상피층 및 홍채에서는 색소결핍 현상이 뚜렷하게 관찰되었다.

• 대한세포병리학회지
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• 제8권2호
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• pp.155-159
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• 1997

Pilomatrixoma is a benign skin appendage tumor of hair matrix cell origin. The cytological appearance of this tumor may cause problems when attempting to establish a differential diagnosis with other neoplasms. Herein we report the aspiration cytology findings of two cases of pilomatrixoma. One case was diagnosed as atypical cell clusters initially and the other was diagnosed as pilomatrixoma. On cytologic examination, both cases showed clusters of tightly arranged basaloid cells with an uniform appearance, scanty cytoplasm and round hyperchromatic nuclei. There were histiocytes and multinucleated foreign body giant cells merged with the amorphous opaque orangeophilic materials of "ghost cells". The differential diagnosis with other neoplasms is discussed.