자연친화적 하천공사 기법이 적용된 경천에서의 어류상 변화

이승휘,권은호,이건우 호남대학교산업기술연구소 2008 산업기술연구논문집 Vol.14 No.-

자연친화적 하천공법이 적용된 하천의 어류상의 변화를 확인하고자 전라북도 순창군에 위치한 경천을 대상으로 모니터링을 수행한 결과 6목 10과에 속하는 33종 의 담수어류가 확인되었다. 이 중 한국고유종은 13종 이 었 고 멸종위기야생동물 2종까지 확인되었다. 우점종은 R. uyekii(26.37%), Z.platypus(26.14%), 그리고 C auratus (l9.11%) 으로 확인되었다. 각 조사지점별 어류상의 양상은 수제에서는 어식성 어류인 C herzi의 출현이 우세하였고, 도피 및 은신할 수 있는 공간을 제공하는 공법 적용 구간에서는 소형 어류를 용이하게 확인할 수 있었을 뿐 아니라 이들의 번식 양상까지 파악할 수 있는 하천 내 공간이 됨을 확인할 수 있었다. 하중도와 수제구간은 육식성 어종인 C. herzi와 Oplatycephala 등에게 사냥 및 서식에 유리한 조건을 제공하여 하천 내 생태적 안정성을 갖춰나가는 요인으로 작용하고 있음을 추정 할 수 있었다. In induction of close-to-nature streams construction, the prerequisite things of characters were analysis the hydraulic and careful consideration of environmental effects about related stream for least trial and error subsequently. The freshwater fish fauna were measured at eight close-to-nature streams construction as which wing deflectors, riffle, sediment basins, stone we protection, low flow revetment, stepping stones, side stream, and island in the Kyungcheon periodically. In analysing the ichthyofauna in Kyungcheon, suitable target fish species were Coreoperca herzi in wing deflectors, Coreoleuciscus splendidus in riffle, and Oryzias latipes in sediment basins in consideration that divergent construction of close-to-nature stream built Comparative study of attemptεd to divergent eight kinds of construction of close-to-nature streams through analysing the ichthyofauna in Kyungcheon. Suitable fish habitats were diversity index , evenness, richness, number of capture, number of species, stability of egg laying, and the area of rest as criteria significantly. The close-to-nature streams would be succeed with stream diversity in circumstances considerably.

[P190] Epithelioid blue nevus : a rare variant of blue nevus

( Seung Hwi Kwon ),( Ge-o Han ),( Hae Jun Song ),( Chil Hwan Oh ),( Jiehyun Jeon ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

A 33-year-old male patient visited our clinic with black colored lightly depressed macule with indurated border on back. He had no underlying disease except chronic hepatitis B. He had received laser treatment but the nevus came back. Clinical impression was blue nevus and the lesion was excised. Histopathological findings showed a relatively well circumscribed, round tumor composed ofheavily pigmented, epithelioid melanocytes, intermixed with dendritic spindled and fusiform shaped melanocytes. Also, immunohistochemical findings included pigmented epithelioid cells positive for S-100 protein and HMB-45, consistent with epithelioid blue cell nevus. Blue nevus is a tumor of dermal dendritic melanocytic origin, and common blue nevus and cellular blue nevus are the most common variants. Epithelioid blue nevus (EBN) is another variant of blue nevus that arises in the background of Carney complex (myxomas, spotty skin pigmentation, endocrine overactivity and psammomatous melanotic schwannomas) or may occur sporadically. The major component of EBN is variably pigmented, epithelioid melanocytes with a few melanophages and only a few dendritic melanocytes. EBN is a diagnostically challenging entity because of its rarity and histological overlap with other pigmented melanocytic lesions, such as cellular blue nevus, malignant blue nevus, and malignant melanoma. Herein, we present a case of epithelioid blue nevus.

[P191] A case of coexistence of venous lake and Fordyce spot.

( Seung Hwi Kwon ),( Ge-o Han ),( Jiehyun Jeon ),( Hae Jun Song ),( Chil Hwan Oh ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

A 61-year-old female patient visited our clinic with yellowish to bluish colored nodule on lower lip for several years. She had no underlying disease. Clinical impression was venous lake and the lesion was excised. Histopathological finding showed normal sebaceous glands, consisting of a group of mature sebaceous lobes surrounding small ducts that emerge at the epithelium surface consistent with, Fordyce spot. In dermis, a single large dilated vascular channel was present. It had a very thin fibrous wall and a flat endothelial lining and a thrombus was present in the lumen, consistent with venous lake. Venous lake is a common vascular lesion caused by a focal dilation of venules, characterized clinically by soft, compressible, dark-blue to violaceous papules, which occurs most often on the lips of elderly patients. benign vascular malformation commonly seen in elderly patients. Although not a life-threatening abnormality, venous lake often presents in cosmetically sensitive area and may negatively impact a patient’s quality of life. Fordyce spots are heterotopic sebaceous glands that can be located at the lips’ vermilion or the oral mucosa. Although this is considered rather common disorder, the coexistence with venous lake is rarely reported. Herein, we present a case of coexistence of venous lake and Fordyce spot.

Nasal airway clogging recurrent viral warts treated with oral cimetidine in a young male patient

( Seung Hwi Kwon ),( Jin Young Song ),( Geo Han ),( Hae Jun Song ),( Chil Hwan Oh ),( Jiehyun Jeon ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Cimetidine is a histamine2-receptor antagonist, frequently used as anti-ulcer agents. Cimetidine also possesses immunomodulatory effects when given in high dosage. Because of these features, it had been prescribed for the treatment of viral warts. A 32-year-old male patient visited our clinic with multiple protruding papules in nostril, external auditory canal, and sole with no other underlying disease. When he had noticed the lesions, he visited otolaryngology clinic and laryngoscopy exam revealed inner airway warty lesions. He had received laser treatment but warts came back only worsened. Histopathological findings showed acanthosis, papillomatosis and hyperkeratosis, consistent with viral warts. The patient was given cimetidine up to 1800mg/day and all the noticeable warts cleared after 4months. Cutaneous warts are the manifestation of human papillomavirus (HPV) infection. Cell-mediated immune response is critical in the involution of HPV infection. There are several treatment options including oral cimetidine. Oral cimetidine is painless and inexpensive option. It has an inhibitory effect on suppressor T-cell function when given in high dose (30-40 mg/kg per day). Use of cimetidine for viral warts has been reported in the literature, but still conflicting. Herein, we present a 32-year-old male patient with airway clogging multiple viral warts successfully treated with oral cimetidine for 4 months without recurrence or side effects.

A case of acquired smooth muscle hamartoma on hand

( Seung Hwi Kwon ),( Jung Woo Lee ),( Jiehyun Jeon ),( Chil Hwan Oh ),( Hae Jun Song ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Smooth muscle hamartomas are uncommon benign neoplasms that are characterized by increased density of smooth muscle bundles in the dermis. It is a skin colored or variably pigmented and even showing hypertrichosis patch or plaque. Although most cases were congenital, acquired lesions have been rarely reported. Histopathologically, lesions showed hyperkeratosis, acanthosis and papillomatosis. Numerous thick, long, well-defined bundles of smooth muscle are seen in the dermis at various angles of orientation. There is clinical and histological overlap with Becker nevus and pilar leiomyoma. Becker nevus is usually acquired dark brownish hairy macule with relatively thin bundles of smooth muscles and much more common in males and adolescence. Pilar leiomyoma is usually seen as protruding nodular lesions and forms smooth muscle bundles intermingled with collagen fiber. A 57-year-old female patient presented with 5 years history of asymptomatic hairless light brown irregular indurated follicular plaques limited on right dorsum of hand. Lesion was a child fist sized and margin was irregular. Histopathological findings exhibited mild epidermal acanthosis, focal basal pigmentation and haphazardly arranged numerous thick, well-defined smooth muscle bundles in the reticular dermis. Herein we report a case of smooth muscle hamartoma on hand with reviewing of literatures.

[P189] Two cases of intraepidermal carcinoma mimicking seborrheic keratosis clinically and showing Jadassohn phenomenon histopathologically

( Seung Hwi Kwon ),( Geo Han ),( Jiehyun Jeon ),( Soo Hong Seo ),( Hae Jun Song ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

Seborrheic keratosis is common benign epidermal neoplasm showing brown colored verrucous surface clinically and malignant change is usually rare. Some seborrheic keratosis specimens may show well-defined islands of cells within the epidermis that differ in their appearance from the surrounding epidermal cell (Jadasshon phenomenon). Though clonal cells are usually benign, sometimes it may be malignant as seen in some skin tumors occasionally having above phenomenon; intraepidermal malignant eccrine poroma and Bowen’s disease. A 68-year-old female patient showed 3.2 x 2.6 cm sized pink to brown verruous plaque on pubic area for more than 5 years. Biopsy disclosed well-defined intraepithelial clonal nesting of the anaplastic cells with hyperchromatic irregular shaped nuclei, multiple cystic lumina, horn cysts and diagnosed as malignant hidracanthoma simplex (intraepithelial eccrine poroma). And a 85-year-old male patient presented chestnut sized erythematous to brownish hyperkeratotic plaque with mulptiple brown patches in its vicinity on his back for several years. Although biopsy revealed only benign reticulated type seborrheic keratosis in brown patches near the hyperkeratotic plaque, intraepithelial clonal islands of atypical cells consistent with Bowen disease were found in the hyperkeratotic pinkish plaque lesion.

A case of pleomorphic adenoma on lip

( Seung Hwi Kwon ),( Jae Woo Ahn ),( Jiehyun Jeon ),( Hae Jun Song ),( Chil Hwan Oh ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1

Pleomorphic adenoma is common benign neoplasm of the major salivary glands. It usually presents as a painless, slow-growing mass. A 55-year-old male patient visited our clinic with a 1-year history of palpable mass on left upper lip. He didn’t complain any pain but soft tissue swelling around the mass was seen. He had no history of trauma. Complete Excision of mass was done. Histopathological findings exhibited well circumscribed tumor surrounded by a fibrous capsule. Tumor contained epithelial and myoepithelial cells with myxoid stroma, consistent with pleomorphic adenoma. Pleomorphic adenoma(PA) is a well-described benign tumor of the salivary glands originating from myoepithelial and intercalated duct cells. It occurs most often between the ages of 30 and 60 years and is found more commonly in females than in males. Head and neck irradiation is one of risk factor. It is most commonly found in major salivary glands, but can be found in minor salivary glands. Palate is the most common site of minor salivary glands followed by lip. Histopathologically, PA is composed of neoplastic myoepithelial cells intermingled with neoplastic ducts and stroma. Treatment is complete excision. Prognosis is usually excellent. However, malignant change of untreated PA of minor salivary glands occurs up to 3%. Therefore, adequate diagnosis and treatment is required. Herein we report a case of pleomorphic adenoma on upper lip with reviewing literature.

[P124] An unusual case of cutaneous sarcoidosis on thin blepharoplasty scars

( Seung Hwi Kwon ),( Ge-o Han ),( Hae Jun Song ),( Chil Hwan Oh ),( Jiehyun Jeon ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1

A 47-year-old woman presented to the dermatology clinic for multiple tiny erythematous and firm papules in a linear array along the upper eyelid blepharoplasty scars on her upper eyelids for 6 months. She had no remarkable medical history and had a surgical history of bilateral blepharoplasty 20 years ago. There were no palpable lymph nodes, pulmonary symptoms. Histopathologic examination showed non-necrotizing, non-caseating granulomatous inflammatory structures comprised of epitheliod cells and Langerhans giant cells with lymphocytic infiltration, consistent with sarcoidosis. Chest radiograph and angiotensin-converting enzyme level, were all within normal limits. After the patient applied dexamethasone eye ointment for about 4 months, the lesions were nearly cleared. Sarcoidosis is a multisystem granulomatous disease characterized by non-caseating granuloma development. Skin involvement is known to be the second most common presentation, reported in 12-27% of patients with systemic disease, but eyelid involvement is very rare and sarcoidosis occurring in an old eyelid scar is even rarer. Blepharoplasty is the plastic surgical operation employed to correct defects or deformities of the eyelids. Considering that blepharoplasty is done quite frequently worldwide, there have been few reports of eyelid scar sarcoidosis. Herein, we report an uncommon case of scar sarcoidosis in blepharoplasty scars.

Case series; Neonatal calcinosis cutis on foot, probably due to needle injury

( Seung Hwi Kwon ),( Jung Woo Lee ),( Jiehyun Jeon ),( Hae Jun Song ),( Chil Hwan Oh ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Dystrophic cutaneous calcinosis cutis is a most common type of calcinosis cutis. It may arise at previously damaged skin such as local injury. Two 1-year-old male patients visited our clinic for hard solitary papule on heel. They were both born at the 39 weeks of gestation by vaginal delivery. Their neonatal course were uneventful. Their calcium and phosphate levels were within normal range. They had a history of needle stick injury on their heel for blood sampling. Excision biopsy were done on their papules. Histopathological findings exhibited focal irregular calcification in the upper dermis, surrounded by inflammatory cells, consistent with calcinosis cutis. Dystrophic calcinosis cutis arises at previously damaged skin. The calcification is assumed to be due to the release of alkaline phosphatase from the damaged tissue. Released alkaline phosphatase induce an increase in local pH, favoring the precipitation of calcium salts. Calcium, phosphate serum levels show normal value. Histopathologically, Dystrophic calcinosis cutis show calcium deposits in epidermis and the dermis. A foreign body giant cell reaction with inflammation is often found around calcium deposits. Treatment is needed for cosmetical defects. Surgical excision is widely used. Because of its rare incidence, these cases are not well known to the dermatologists. Herein we report case series of neonatal calcinosis on foot with reviewing of literatures.

Spontaneous keloid or keloidal scleroderma; 3 cases of scar like lesions on breast

( Seung Hwi Kwon ),( Jung Woo Lee ),( Jiehyun Jeon ),( Hae Jun Song ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Although spontaneous keloids have been reported, most of hypertrophic or keloidal lesions are developed after certain kinds of traumatic events on predisposing sites. 3 women showing very similar clinical findings presented with erythematous linear hypertrophic scar/keloid-like plaques on medial aspect of their left breast near the areolar area. Itching was noted in 2 women. Trauma histories related with lesion formation were not revealed in all cases. Lesions were developed in their early 40s in 2 patients and late 50s in the other. One patient had a history of ovarian cancer and hypothyroidism, and one patient had asthma and polyneuropathy. No specific abnormal findings were noted in routine laboratory tests. On histologic examination, mild acanthotic epidermal hyperplasia and perivascular lymphohistiocytic inflammatory cell infiltrates were seen in the dermis. Thickened and hyalinized collagen bundles were intermingled with increased numbers of fibrous spindle cells in the dermis of 2 patients. In other patient’s specimen, who has been treated for a long time with intralesional injection of steroid, thickening of collagen bundles were minimal. Although they were thought as hypertrophic scar or keloids at the start, after extensive review of literature, keloidal scleroderma was suspected. We herein report interesting 3 cases of suspected keloidal scleroderma showing unique common clinical features.