Indeterminate cell proliferations are rarely described in dermatology literature. Indeterminate cells are characterized by positivity for S-100 protein and CD-la, but are distinguished from Langerhans cells by the absence of Birbeck granules. We present a case of congenital indeterminate cell histiocytoma in a 6-day-old male infant. A Skin examination revealed a solitary, erythematous, 6*6cm, superficially crusted, dome shaped papule on his forehead. A Histopathologic examination showed a dense cellular infiltrate in the dermis, below the atrophic epidermis. Frequently, the nucleus demonstrated a single cleft or crease like the shape of a kidney. These cells showed positivity for S-100 protein. Birbeck granules were not found on electron microscopic examination.
Dermatology ; Dermis ; Epidermis ; Forehead ; Histiocytoma* ; Humans ; Infant ; Kidney ; Langerhans Cells ; Male ; S100 Proteins ; Skin

Lichenoid keratosis (LK), a lichen planus-like keratosis, is a rather frequent skin disorder that has some histological features similar to lichen planus. However, the classification system for LK has not been settled. We report two cases of LK and propose a new classification for LK correlating with clinicohistopathological findings.
Actins* ; Classification ; Keratosis* ; Lichen Planus ; Lichens ; Skin

Winkelmann granuloma is a very rare disorder characterized by histologic findings of perhaps[ic] infiltration, collagen degeneration, and granulomatous inflammation, which usually show palisading features. A number of diseases, especially systemic immunoreactive diseases, are associated with this disorder. We describe a focal neutrophilic necrosis : type of Winkelmann granuloma associated with hypothy- roidism and rheumatoid arthritis.
Arthritis, Rheumatoid* ; Collagen ; Granuloma* ; Hypothyroidism* ; Inflammation ; Necrosis ; Neutrophils

Cutaneous metastasis from parotid gland carcinoma is very rare and there have been no re-ports in Korean literatures. Furthermore, it can often manifest as inflammatory type of skin metastasis and mimic a radiodermatitis. We report a case of a 31-year-old Korean man with cutaneous metastasis originated from parotid gland mucoepidermoid carcoinoma which mimicked clinically a radiodermatitis.
Adult ; Carcinoma, Mucoepidermoid* ; Humans ; Neoplasm Metastasis* ; Parotid Gland* ; Radiodermatitis* ; Skin*

Cutaneous pseudolymphoma (CPL) has a microscopic appearance that resembles that of cutaneous lymphoma, but shows a clinically benign course. The differential diagnosis of CPL with cutaneous lymphoma is very important because clinical outcomes of them are quite different. We herein describe two cases of B-cell pseudolymphoma, which were difficult to differentiate from cutaneous B-cell lymphlma. All of two cases, Polymerase chain reaction of immunoglobulin heavy chain gene rearrangement showed polyclonal pattern.
B-Lymphocytes* ; Diagnosis, Differential ; Gene Rearrangement ; Immunoglobulin Heavy Chains ; Lymphoma ; Polymerase Chain Reaction ; Pseudolymphoma*

A 68-year-old Korean woman was consulted to the department of dermatology to evaluate ulcerated lesions on the perianal area, which developed about 3 weeks after a cadaveric renal trans-plantation. Histopathologic examination showed large atypical cytomegalic cells in the upper dermis. Polymerase chain reaction(PCR) study revealed positive cytomegalovirus(CMV) deoxyribonucleic acid(DNA) from the skin tissue. We herein present a case of cutaneous CMV infection presenting as perianal ulcers.
Aged ; Cadaver ; Cytomegalovirus Infections* ; Cytomegalovirus* ; Dermatology ; Dermis ; Female ; Humans ; Kidney Transplantation ; Skin ; Ulcer*

Wiscott-Aldrich syndrome (WAS) is an X-linked recessive disorder affecting males and is characterized by recurrent systemic bacterial and viral infections, purpura due to thrombocytopenia, and an atopic dermatitis-like skin eruption. WAS usually manifests itself early during the first few weeks or months of life with bleeding. A case of WAS with the classical symptoms(eczema, thrombocytopenia and susceptibility to infections) is described in a 12-year-old Korean boy. He had a relatively good outcome.
Child ; Hemorrhage ; Humans ; Male ; Purpura ; Skin ; Thrombocytopenia

Childhood granulomatous perioral dermatitis is a distinctive granulomatous process of unknown cause with a benign and self-limited course and no associated systemic manifestations. We herein report a case of a 12-year-old Korean girl with multiple, discrete, monomorphic, flesh-colon, papular eruptions on the perioral, periocular, and perinasal areas of 7-month duration. Histopathologic examination revealed upper dermal and perifollicular granulomatous infiltrate.
Child ; Dermatitis, Perioral* ; Female ; Humans

Cutaneous larva migrans(creeping eruption) is a rare cutaneous serpiginous erution caused by the accidental invasion of the skin by parasites. We report herein a 27 year-old female with a mild pruritic erythematous serpiginous linear skin lesion located on the patient's back for a month. Histopathologic examination revealed a larva in the dermis with dense iinfiltrates of eosinophils and lymphocytes. After treatment with oral anitiparasitics, the skin lesions resolved with post-inflammatory hyperpigmentation. This is the first case of larva migrans showing the larva on the biopsy specimen in Korea.
Adult ; Biopsy* ; Dermis ; Eosinophils ; Female ; Humans ; Hyperpigmentation ; Korea ; Larva Migrans* ; Larva* ; Lymphocytes ; Parasites ; Skin

Churg-Strauss syndrome (CSS) is a very rare disease which combines the features of asthma, hypereosinophilia, multisystem necrotizing vasculitis and extravascular granuolma. To our knolwedge, there have been four reports in Korean journals, but none in dermatology journals. We report a 37-year-old male who had allergic rhinitis, pansinusitis, a history of atopic dermatitis, multiple prurigo-nodularis like skin lesions, non-fixed interstitial lung in-filtration, hypereosinophilia and subclinical asthma. Clinical and histopathological features of his skin lesions were nonspecific where perivascular lymphocytic infiltration and mild lymphocytic vasculitis were shown. The presence of a pituitary mass and proximal myopathy as op-posed to peripheral neuropathy have not been reported in previous reports of CSS. However, other features of our patient met the criteria of CSS.
Adult ; Asthma ; Churg-Strauss Syndrome* ; Dermatitis, Atopic ; Dermatology ; Humans ; Lung ; Male ; Muscular Diseases ; Peripheral Nervous System Diseases ; Rare Diseases ; Rhinitis, Allergic ; Skin ; Vasculitis