No abstract available.
Neurofibroma, Plexiform* ; Urinary Bladder*

BACKGROUND: Melanocytes grown in pure monolayer culure lack many of the cellular interactions that exist in vivo. This can be partially overcome by growing melanocytes together with other epidermal cells in skin equivalent models. OBJECTIVE: The objective of the present study was to grow human melanocytes in human epidermis reconstructed on dermal substrates in vitro and to examine their response to UV radiation. METHODS: The skin equivalents were prepared by seeding cultured human keratinocytes together with cultured human melanocytes(in a ratio of 5%) onto de-epidermized dermis. After 7 days of culture, they were exposed to UVB irradiation(total 150m J/cm over 5days). On day 12 of air exposure the sections of the skin equivalents were prepared for histology. The structure of the skin equivalents was studied following staining with hematoxylin and eosin. Melanocytes were characterized by DOPA staining and by immunohistochemistry. RESULTS: Melanocytes were localized singly within the basal layer of the reconstructs. Melanin was also visible both in the melanocytes and in neighboring keratinocytes. There was an increase in melanocyte size and dendricity following UV irradiation. Melanocytes became positive to staining with HMB-45 antibody following UV irradiation. CONCLUSION: Our results indicate that melanocytes grown in reconstructed human epidermis are functional and capable of responding to UV irradiation.
Dermis ; Dihydroxyphenylalanine ; Eosine Yellowish-(YS) ; Epidermis* ; Hematoxylin ; Humans* ; Immunohistochemistry ; Keratinocytes ; Melanins ; Melanocytes* ; Skin

Traumatic optic neuropathy (TON) is an important cause of severe visual loss after blunt or penetrating head and facial trauma. High-dose steroids and surgical interventions have been applied in the indirect TON. However, there is no convincing evidence that results of the treatment have any strong benefits in terms of improvement of visual acuity. Nevertheless, surgical decompression should be considered in the case of a direct bony compression to the optic nerve and a progressive visual loss in indirect TON. Neurosurgeon should be aware the surgical indication, optimal timing and relevant technique for the optic canal (OC) decompression. In this review article, we will focus on the surgical approaches to the OC and how to decompress it.
Decompression ; Decompression, Surgical ; Head ; Neurosurgeons ; Optic Nerve ; Optic Nerve Injuries* ; Steroids ; Visual Acuity

We report a case of the transradial approach for carotid artery stenting (CAS) as a useful alternative to the traditional transfemoral approach when femoral access is not available. A 50-year-old male visited our emergency room with dysarthria and right-side weakness. Magnetic resonance imaging showed acute cerebral infarction on the left middle cerebral artery territory and carotid stenosis on both sides. CAS for each carotid stenosis was attempted by the usual femoral access, but there was no pulse on either side of the femoral artery, and computed tomography angiogram of the lower extremity revealed Leriche syndrome, which is an aortoiliac occlusive disease. So, we changed the access to the radial artery and was successfully performed.

Developmental venous anomalies (DVAs) are cited as the most common intracranial vascular anomaly. In the majority of cases, it has a benign clinical course, and complications such as intracranial hemorrhage (ICH) are rarely reported. In the rare cases of DVAs presenting ICH, the causes of hemorrhage are usually by a combined vascular anomaly, mostly cavernous malformation (CM) or complicated DVAs, such as thrombosis in the vein of DVAs. We report a rare case of uncomplicated DVA presenting hemorrhage without accompanied vascular anomaly, such as CM. The cause of hemorrhage is suggested to be a specific form of DVA, arterialized DVA. Arterialized DVAs should be noted that they have a greater risk of hemorrhage than classic DVAs.

We report a case of the transradial approach for carotid artery stenting (CAS) as a useful alternative to the traditional transfemoral approach when femoral access is not available. A 50-year-old male visited our emergency room with dysarthria and right-side weakness. Magnetic resonance imaging showed acute cerebral infarction on the left middle cerebral artery territory and carotid stenosis on both sides. CAS for each carotid stenosis was attempted by the usual femoral access, but there was no pulse on either side of the femoral artery, and computed tomography angiogram of the lower extremity revealed Leriche syndrome, which is an aortoiliac occlusive disease. So, we changed the access to the radial artery and was successfully performed.

Developmental venous anomalies (DVAs) are cited as the most common intracranial vascular anomaly. In the majority of cases, it has a benign clinical course, and complications such as intracranial hemorrhage (ICH) are rarely reported. In the rare cases of DVAs presenting ICH, the causes of hemorrhage are usually by a combined vascular anomaly, mostly cavernous malformation (CM) or complicated DVAs, such as thrombosis in the vein of DVAs. We report a rare case of uncomplicated DVA presenting hemorrhage without accompanied vascular anomaly, such as CM. The cause of hemorrhage is suggested to be a specific form of DVA, arterialized DVA. Arterialized DVAs should be noted that they have a greater risk of hemorrhage than classic DVAs.

Myxedema coma is a severe life-threatening form of hypothyroidism that is associated with a high mortality rate. It is known to be common in the elderly, and is mainly accompanied with cardiogenic shock, respiratory failure, central nervous system dysfunction, and body temperature regulation defects. Thus, immediate management is required in order to prevent fatal complications in myxedema coma. However, early detection is difficult and further, it is easily misdiagnosed due to its low incidence rate and nonspecific symptoms. We report a case of myxedema coma which was misdiagnosed for heart failure. The patient was successfully treated with intensive care and oral low dose levothyroxine.
Aged ; Body Temperature Regulation ; Central Nervous System ; Coma* ; Heart Failure ; Humans ; Hypothyroidism ; Hypoventilation ; Incidence ; Critical Care ; Mortality ; Myxedema* ; Respiratory Insufficiency ; Shock, Cardiogenic ; Thyroxine*

We report a case of trichoblastic fibroma involving the scrotum in a 60-year-old man. Trichoblastic fibroma is very rare and benign trichogenic tumor that has both epithelial and mesenchymal components and histologically recount the embryologic development of the hair follicle. The diagnosis was confirmed by histopathologic examination.
Diagnosis ; Fibroma* ; Hair Follicle ; Humans ; Middle Aged ; Scrotum*

Purpose: This study aimed to analyze the clinical outcomes of venous thromboembolism (VTE) patients and identify the risk factors for VTE-related unfavorable outcomes, major bleeding, and 30-day all-cause mortality. Materials and Methods: From January 2016 to December 2020, 198 patients with confirmed VTE were enrolled. Potential risk factors for unfavorable outcomes, major bleeding, and all-cause mortality were analyzed. Results: VTE-related unfavorable outcomes developed in 13.1%, while 30-day all-cause mortality was 8.6%. In the multivariate analysis, a pulse ≥110/min and respiratory rate ≥30/min were statistically significant predictors for VTE-related unfavorable outcomes. Diabetes was a significant risk factor for major bleeding. In addition, a history of malignancy, no anticoagulation treatment, and need for mechanical ventilation were significant predictors of all-cause mortality. Conclusion VTE-related mortality and morbidity rates remained high. In cases of tachycardia and tachypnea, early aggressive treatment is needed to prevent unfavorable outcomes. Patients with risk factors should be closely monitored.