Pityriasis rotunda is a rare disease characterized by round to oval, sharply defined, hypopigmented or hyperpigmented, scaly patches of variable number and size located trunk and extremity. The etiology is unknown but it has been associated with a variety of systemic illnesses, such as tuberculosis, malnutrition and malignancy. The first case was a 28-year-old male who presented with a 2-year history of multiple round shaped hyperpigmented patches on the trunk. The second-case was a 38-year-old female who presented with a 2-month history of circular, sharply defined multiple patches with ichthyosiform scaling on the trunk. Both patients had no systemic disease or familial history. We experienced 2 cases of pityriasis rotunda on the trunk without underlying systemic illnesses or familial association.
Adult ; Extremities ; Female ; Humans ; Ichthyosis ; Male ; Malnutrition ; Pityriasis ; Rare Diseases ; Tuberculosis

Verrucous carcinoma is an unusual, non-metastasizing, distinct variant of squamous cell carcinoma composed of four subtypes according to the site of occurrence: oral type, anogenital type, plantar type, and other cutaneous sites. Oral type verrucous carcinoma usually shows slow progression with a low incidence of metastases. Treatment of verrcous carcinoma is challenging; multiple medical and surgical therapies are often attempted, with limited success. We reported on 2 cases of verrucous carcinoma of the lip treated with topical imiquimod and debulking therapy.
Aminoquinolines ; Carcinoma, Squamous Cell ; Carcinoma, Verrucous ; Cryotherapy ; Incidence ; Lasers, Gas ; Lip ; Neoplasm Metastasis

Papular elastorrhexis is a rare cutaneous disorder that occurs predominantly during adolescence. The disorder is characterized by asymptomatic indurated white or flesh papules showing decreased and fragmented elastic fibers in the dermis. We herein report on a 12-year-old girl with multiple asymptomatic white, nonfollicular, firm papules scattered on the extremities and trunk. Histological examination revealed focal areas showing increased layers of collagen fibers and decreased and fragmented elastic fibers in the upper dermis.
Adolescent ; Child ; Collagen ; Dermis ; Diagnosis, Differential ; Elastic Tissue ; Extremities ; Humans ; Nevus

Cutaneous focal mucinosis is a rare condition that manifests with asymptomatic small white to flesh-colored papules on the face, neck, trunk and extremities. Johnson and Helwig first described it in 1961 and it is histologically characterized by localized accumulation of mucin in the upper and mid-dermis with scattered spindle-shaped fibroblasts. We report here on a case of cutaneous focal mucinosis that presented as a nodule with several small papules on it on the face.
Extremities ; Fibroblasts ; Humans ; Mucinoses ; Mucins ; Neck

Clear cell syringoma has two distinct features from typical syringomas: histological predominance of clear cells and a correlation with diabetes mellitus. Otherwise it is similar to ordinary syringomas in age, sex, site, and clinical manifestations. We here report a 49-year-old male with clear cell syringoma accompanied with diabetes mellitus. Histological examination revealed numerous, variable-sized, well-defined tumor nests composed largely of clear cells that stained positive with PAS (Periodic Acid Schiff) before diastase digestion and negative after diastase digestion.
Adult ; Amylases ; Diabetes Mellitus ; Digestion ; Humans ; Male ; Middle Aged ; Syringoma

Papillomatous melanocytic nevus is a clinical type of melanocytic nevus, and this has also been described as keratotic melanocytic nevus or seborrheic wart-like melanocytic nevus. Although the pathogenesis of this phenomenon is not well recognized, some hypotheses do exist, such as it is an abnormality that occurs at some stages in embryonic development. There is also the possibility that dermo-epidermal interactions exist. On our review of the medical literature, there are only four Korean cases of intradermal nevus that have developed as papillomatous melanocytic nevi. We report here on a Korean case of a compound nevus with features of papillomatous melanocytic nevus.
Embryonic Development ; Female ; Keratosis, Seborrheic ; Nevus ; Nevus, Intradermal ; Nevus, Pigmented ; Pregnancy

Hidradenoma papilliferum is a benign, cystic, papillary tumor that occurs almost exclusively in women on the skin of the anogenital region and this is usually a slow-growing cystic dermal mass that can be either asymptomatic or it can ulcerate and bleed, and it represents an adenoma with apocrine differentiation. Nonanogenital (ectopic) hidradenoma papilliferum is rare. We present here a case of hidradenoma papilliferum in a 52-year old male with an erythematous to brownish nodule on the left cheek and the lesion had the typical histopathological findings of hidradenoma papilliferum.
Acrospiroma ; Adenoma ; Adult ; Cheek ; Female ; Humans ; Male ; Skin ; Ulcer

Argyria is a rare cutaneous discoloration caused by the intake of silver or various compounds containing silver. We report a case of argyria in a 73-year-old male following ingestion of colloidal silver as an alternative medicine over 5 years. He had a diffuse, slate gray discoloration of his face and hands. A biopsy specimen from the face revealed brown-black extracellular granules in the upper dermis and between collagen bundles. We also found silver particles in the mucous of the colon. The ingestion of colloidal silver appears to be increasing among patients using alternative health practices. We report this case to bring people's attention to the problems associated with the ingestion of colloidal silver.
Aged ; Argyria ; Biopsy ; Collagen ; Colloids ; Colon ; Complementary Therapies ; Dermis ; Eating ; Hand ; Humans ; Male ; Silver

Pancreatic endocrine tumors (PET) are rare neoplasms of the pancreas and account for less than 5% of all primary pancreatic malignancies. Included in this group are insulinomas, gastrinomas, glucagonomas and somatostatinomas. Collectively, these neoplasms are classified as functional PETs. When a PET is not associated with a clinical syndrome due to hormone oversecretion, it is referred to as a non-functional PET. Non-functionalPETs are pancreatic tumors with endocrine differentiation but lack a clinical syndrome of hormone hypersecretion. Although a pancreatic carcinoma shows aggressive biological behavior, a cutaneous metastasis from a pancreas carcinoma is rare. We report a case of a case of a cutaneous metastasis from an endocrine pancreatic carcinoma in a 50-year-old female that clinically manifested as a painful firm nodule on the back.
Female ; Gastrinoma ; Glucagonoma ; Humans ; Insulinoma ; Middle Aged ; Neoplasm Metastasis ; Pancreas ; Pancreatic Neoplasms ; Somatostatinoma

BACKGROUND: The common allergens for patients with allergic contact dermatitis (ACD) have changed with the passage of time. Ammoniated mercury was the most common allergen in the 1980s, but it has been replaced by nickel sulphate. OBJECTIVE: We wanted to delineate the recent alterations of common allergens of Korean ACD patients. METHODS: We retrospectively reviewed the medical recordings of the patients who were diagnosed with ACD and we performed patch tests on these patients from July 2005 to May 2008. A total of 676 patients were enrolled in this study and the medical records included the patients' age and gender, the site of ACD, the clinical pictures and the results of a Korean standard series of patch tests. RESULTS: The male to female ratio was 1.62 and the mean age of onset was 41.2+/-16.5 years. The most common ages of the ACD patients were the forties for males and the thirties for females. The most prevalent sites for ACD were the face, scalp and hands in males, while those for females were the face, hands and arms in order of frequency, respectively. The most common allergens were nickel sulfate for females and mercury ammonium chloride for males. CONCLUSION: For ACD, the relative proportion of male patients has recently been markedly enlarged. This phenomenon might be related to the increased use of men's cosmetic products, and the market for these products had tremendously expanded during the last decade.
Age of Onset ; Allergens ; Ammonia ; Ammonium Chloride ; Arm ; Cosmetics ; Dermatitis, Allergic Contact ; Dermatitis, Contact ; Epidemiologic Studies ; Female ; Hand ; Humans ; Male ; Medical Records ; Mercuric Chloride ; Nickel ; Patch Tests ; Retrospective Studies ; Scalp