Polycythemia as a Complication of Long-acting Injectable Testosterone Undecanoate / 대한남성과학회지

Polycythemia is a condition in which the red blood cell count is increased due to an inherited or acquired mutation, a physiologic response to hypoxia, autonomous erythropoietin production, or deliberate erythropoietin administration. Higher testosterone levels appear to act as a stimulus for erythropoiesis and testosterone replacement therapies have rarely been reported as causes of polycythemia. We report here a case of a 51-year-old man with polycythemia that was caused by long-acting testosterone undecanoate (Nebido(R)).

Antitumor Effect of in Situ Cryoablation with Systemic Immunotherapy on Murine Renal Cell Tumor / 대한비뇨기과학회지

PURPOSE: To investigate synergistic effect of local cryoablation with systemic immunotherapy, the tumor control ability and immunologic responses of combining these two modalities was compared with that of cryoablation, surgical excision, and immunotherapy only group in a tumor re-challenge model. MATERIALS AND METHODS: Preliminary experiments were performed in two stages. The first stage consisted of 36 Balb/c mice with Renca bearing tumors imbedded in the right thigh, and was treated with interleukin-2 (IL-2) and interferon-alpha(IFN-alpha) to evaluate the efficacy of immunotherapy and to determine the adequate dosage. The second stage was performed on 10 mice, to evaluate histological changes and efficacy after cryoablation. The main experiment was performed on 48 mice, divided into 6 groups of control with tumor implantation, excision of tumor, excision combined with immunotherapy, cryoablation of tumor, cryoablation with immunotherapy and control without tumor. After treatment, tumor re-challenge was performed with Renca cell, then the growth pattern was evaluated with physical measurements, and immune response was investigated with fluorescent activated cell sorter and cytotoxicity assay. RESULTS: Preliminary studies on immunologic efficacy revealed that IL-2 and IFN-alpha have a dose dependent inhibition of tumor growth. The main experiment evaluating the efficacy of combination treatment revealed that cryoablation with immunotherapy proved to be most effective in terms of tumor recurrence and tumor growth inhibition, yet the difference was not statistically significant from monotherapy with cryoablation. However, cytotoxicity was significantly increased cryoablation with immunotherapy compared with other groups. CONCLUSIONS: Cryoablation on tumor re-challenge mice model showed advantages with immunotherapy most prominently in cytotoxicity.

Immunohistochemical Detection of Prekeratin and Keratin in Hair Follicles and Epidermis of Human Fetus / 대한피부과학회지

Authors attempted to examine the development of keratinocyte in the human fetal epiderrnis in term of the appearance of principal product of differentiation, the keratins. Immunohistochemical study (ABC method) using anti-prekeratin antibodies and anti-keratin antibodies was carried out on sampled skin from 9 human fetuses ranging in estirnated gestational age from 12 weeks to 27 weeks. As early as 12 weeks of embryonic life, the epidermis contained cytokeratin. At this stage of development, the embryonic epidermis consists of three-cell layer .' basal layer, intermediate layer, and periderm, all of them staining for prekeratin and keratin. A thick cornified layer developed at 24 weeks but was not stained for prekeratin and keratin. Hair germ of 12 week-fetus was recognized as bulges of basal cells that were stained for prekeratin and keratin. At 18 weeks of estimated gestational age, development has advanced to the bulbous hair peg stage at which point the primordia of nearly all the final structural components of follicles were established. In the final structureal cornponents of the follicles, outer root sheath and sebaceous gland were stained for prekeratin and keratin, whereas cortical and cuticular elements and inner root sheath were negative. There was no difference between immunostaining results for prekeratin and keratin except for the staining intensity. The appearance of these proteins early in development suggests their potential value in utero in the recognition of keratinization disorders.

A Case of Myxoid Malignant Fibrous Histiocytoma / 대한피부과학회지

Malignant fibrous histiocytoma is the most common soft tissue sarcoma in adult life and shows a mixed proliferation of both fibroblsstic & histiocytic cells. We report a case of myxoid malignant fibrous histiocytoma involving right lower leg in a 68-year-old male patient, who presented with a childs palm-sized nodular mass of 3 years duration. Histoapthologically, the tumor had varying proportion of myxoid cellular components. The myxoid areas showed spindle and pleomorphic cells arranged in a vague storiform pattern, abrupt transition between a solidly cellular area and a myxoid area, and lipoblast-like cells. The cellular areas showed spindle cells arranged in a storiform pattern characteritic of the typical pleomorphic malignant fibrous histiocytorna.

Two Cases of Dyschromatosis Symmetrica Hereditaria / 대한피부과학회지

We report two cases of dyschromatosis symmetrica hereditaria. One is a 12-year- old female and her family had five individuals with similar pigmentary disorder through three generation. The other is a 22-yesr-old female who had no family history of similar disease. Fontana-Masson stain revealed increased and decreased melanin granules in the basal cell layers in the pigmented and depigmented lesions respectively.

A Case of cutis Verticis Gyrata due to Cerebri - form Intradermal Nevus / 대한피부과학회지

We report a case of cerebriform intradermal nevus. a cause of cutis verticis gyrata that clinically they resembled neurofibroma and revealed histopathologic finding consistent with intradermal nevus. The patient was a 6 year-old boy, who had a 17x18cm, soft, convoluted. pigmented mass over the parietal and occipital regions. The lesion had been present since birth and had been slowly increasing in size with convolution.