A Case of Scalp Metastasis Manifested as the Presenting Sign of Thyroid Carcinoma / 대한피부과학회지

Cutaneous metastasis from the papillary thyroid carcinoma is rare. An otherwise asymptomatic 57-year-old man presented with a 3 year history of a steadily-enlarging scalp nodule. The histopathologic features showed a complicated pattern of follicular architecture formed by papilliform fibrovascular stroma. The tumor cells stained positive for thyroglobulin. A subsequent thyroid sonogram revealed multiple nodules in both lobes and resection of the thyroid gland identified papillary thyroid carcinoma. The solitary scalp nodule was presenting sign of an occult thyroid carcinoma. We report a case of cutaneous metastasis from the papillary thyroid carcinoma.

A Clinicopathologic Study of Bowen's Disease / 대한피부과학회지

BACKGROUND: Bowen's disease, also known as squamous intraepidermal carcinoma, is a pre-malignant skin tumor with a potential to progress to an invasive carcinoma. OBJECTIVE: The purpose of this study was to investigate the clinical and histopathological characteristics of Bowen's disease. METHODS: A total of 45 patients with Bowen's disease were enrolled in this study. The hospital charts and histopathological slides from 1994 to 2005 were reviewed retrospectively at Seoul Veterans Hospital. RESULTS: There were thirty-seven cases (82%) of single lesions and eight cases (18%) of multiple lesions. Thirty cases (81%) of solitary Bowen's disease were located in non sun-exposed areas. These included the trunk, extremities and genital area in decreasing order. Seven cases (19%) of solitary Bowen's disease occurred on sun- exposed areas including the face and the dorsum of the hand in decreasing order. Analysis of the clinical character of Bowen's disease was performed and results were as follows: the most common type was patch (20 cases; 44%), plaque (14 cases; 31%) and pigmented lesions (12 cases: 27%). Analysis of the histopathological character of Bowen's disease was performed and results were as follows: the most common type was irregular (18 cases; 46%), psoriasiform (11 cases; 28%) and verrucous, atrophic type in decreasing order. Of 18 cases where surgical removal was performed, there were 2 case (11%) of recurrence. Of 16 cases where cryotherapy treatment was administered, there were 3 cases of recurrence. And of 4 cases where CO2 laser therapy was used, there was 1 case (25%) of recurrence, in 2 cases where multiple or large-sized lesions were observed, clinical recovery processes were monitored after applying isotretinoin and 5-FU combined therapy, as well as surgical removal and cryotherapy combined therapy. CONCLUSION: In Bowen's disease among Koreans, there were many distinctive clinical and histopathological features compared to those of non-Korean cases.

A Case of Warty Dyskeratoma of the Scalp / 대한피부과학회지

We report a case of warty dyskeratoma in a 59-year-old man. For 10 years, he had had an asymptomatic solitary 0.5x0.5 cm sized, erythematous, hard papule with a yellowish, central keratotic plug on the vertex. Histological findings showed a large cup-shaped, keratin-filled invagination of acanthotic epidermis, and a suprabasal cleft formation with corps ronds, grains and numerous villi at the lower portion of the invagination, the characteristic features of warty dyskeratoma.

A Case of Chondroid Syringoma with Follicular Differentiation / 대한피부과학회지

Chondroid syringoma, also known as `mixed tumor of the skin', is a kind of acquired hamartoma of folliculosebaceous-apocrine lineage. Histologically, it is characterized by the biphasic pattern, with epithelial structures enveloped by abundant stroma. We report a case of chondroid syringoma, as an asymptomatic nodule, on the upper lip of a 55-year-old male. Histologically, the tumor had both epithelial components with follicular differentiation and myxochondroid stroma.

Four Cases of Primary Cutis Verticis Gyrata / 대한피부과학회지

No abstract available.

A Case of Cutaneous Leiomyosarcoma / 대한피부과학회지

Cutaneous leiomyosarcoma is a rare soft-tissue tumor of smooth muscle derivation that accounts for 2%-3% of all soft tissue sarcomas. Cutaneous leiomyosarcomas can be subdivided into dermal and subcutaneous leiomyosarcomas. Because of the different prognosis, it is important to distinguish between dermal and subcutaneous forms. Immunohistochemical stains, such as vimentin, smooth muscle actin (SMA), desmin, CD68, CD34, and S-100, may aid in the recognition of smooth muscle derivation and in the differentiation from other malignant spindle cell tumors. We report a case of cutaneous leiomyosarcoma on the extensor surface of the left thigh in a 61-year-old man.

A Case of Alopecia Neoplastica from Breast Cancer / 대한피부과학회지

We report a case of alopecia neoplastica in a 54-year-old woman, who presented with a 2 month history of a solitary 2X2 cm sized, erythematous hairless plaque on the vertex. Histological findings showed an extensive infiltration of tumor cells in the dermis, resulting in loss of the pilosebaceous structure. Tumor cells infiltrated in sheets or cords of cells, sometimes demonstrating glandular structures, and tumor cells formed small groups or single rows between thickened collagen bundles; the characteristic features of alopecia neoplastica.