Trichomonas tenax(T. tenax) and Trichomonas hominis (T. hominis) were collected, cultured and sampled for comparative microscopical studies using electron microscope. Both flagellates were oval in shape and surrounded by a distinct outer membrane. Five recurrent flagella and one anterior flagellum had, each, 9 paris of peripheral and 1 pair of central fibrils, Undulating membrane was curved over the recurrent flagella, and bended in the middle at right angles with cell surface. Cytostome, engulfing bacteria, was observed in T. hominis. In the cytoplasm, there were fine dense glycogen particles, and vacuoles containing ingested materials. Dense pigment rods were also observed in both flagellates, but the rods were not distributed around the vacuoles in T. hominis. In T. tenax axostyle appeared as a cup-shaped structure comprising a single row of 41 fibrils, each about 120 a in diameter. It enclosed glycogen particles, and the open side was faced to the nucleus. Endoplasmic reticulum was observed around the nucleus, but it was less developed in T. hominis. Nucleus was ovoid having double nuclear membrane, which was clearly defined in T. hominis. Blepharoplast, parabasal body, Golgi appartus and mitochondrion was not observed in both flagellates.
parasitology-protozoa-Trichomonas tenax-Trichomonas hominis ; electron microscopy

Solitary morphea profunda is a rare form of scleroderma, characterized clinically by a solitary sclerotic plaque, and histologically by marked dermal and subcutaneous fibrosis with an inflammatory infiltrate. We describe another case of this entity presented with an ulcerative, indurated plaque on the left iliac crest, which histologically revealed a focal incidental acantholysis in the overlying epidermis and a marked eosinophilic infiltration through the dermis to the sub-cutaneous tissue.
Acantholysis* ; Dermis ; Eosinophils ; Epidermis ; Fibrosis ; Scleroderma, Localized* ; Ulcer

No abstract available.
Diploidy* ; Humans* ; Measles* ; Mumps* ; Rubella Vaccine* ; Rubella*

Acrokeratoelastoidosis of Costa is a rare palmoplantar keratoderma with autosomal dominant inheritance. It is clinically charaeterized by small, firm, yellowish, shiny, translucent papules occumng over the dorsal hands, the knuckles, and the lateral margine of the palms and soles. Histologically, the characteristic features are hyperkeratosis, aeanthosis, and most strikingly, fragmentation of coarse elastic fibers within the dermis. The lesions usually begin in early childhood and progress slowly. We herein report two familial cases of acrokeratoelastoidosis of Costa showing typical clinic1 and histopathological features.
Dermis ; Elastic Tissue ; Hand ; Keratoderma, Palmoplantar ; Wills*

Milia en plaque is characterixed by multiple milia-like lesions within an erythematous edematous plaque in the postauricular area. The histopathological findings are those of milia. We report a case of milia en plaque occurring on the scapha's fossa of the left auricle in a 3-year-old boy.
Child, Preschool ; Humans ; Male

We described a case of diffuse biphasic cutaneous amyloidosis, a unique form of localized cutaneous amyloidosis. A 41-year-old man has gradually developed a lichenoid papular and a grouped spotted pigmented macular eruption on the trunk and upper extremities over the past 15 years. Histopathologic examination revealed that amyloid deposits were present in the papillary dermis. It was confirmed by Congo red staining, immunohistochemistry and electron microscopy. There was no evidence of systemic amyloidosis.
Adult ; Amyloidosis* ; Congo Red ; Dermis ; Humans ; Immunohistochemistry ; Microscopy, Electron ; Plaque, Amyloid ; Upper Extremity

Angioma serpiginosum is a rare vascular naevoid disorder due to progressive ectatic dilatation of capillaries in the papillary dermis. We report two cases of angioma serpiginosum. A 24-year-old woman presented with asymptomatic multiple deeply red macules arranged in a serpiginous pattern on the left posterior thigh. In the other case, an 8-year-old girl had asymptomatic red nonpalpable puncta that were grouped closely together in a linear pattern from the left lower abdomen to thigh. On the histopathological examination, both cases commonly showed grouped, dilated, ectatic vessels in the upper dermis. These clinical and histopathological findings were typical of angioma serpiginosum.
Abdomen ; Capillaries ; Child ; Dermis ; Dilatation ; Female ; Hemangioma* ; Humans ; Thigh ; Young Adult

Acanthoma fissuratum is a localized thickening of the skin in response to pressure by an eyeglass frame and usually occurs on the retroauricular fold, superior auricular crease, or bridge of the nose. The definitive diagnosis can be confirmed by characteristic clinical and histopathological features in association with anamnestic data. Herein we report a case of acanthoma fissuratum developing on an unusual site-the mucosa of the upper lip and it was successfully treated with simple excision.
Acanthoma* ; Diagnosis ; Lip* ; Mucous Membrane* ; Nose ; Skin

BACKGROUND: Partial unilateral lentiginosis (PUL) is a rare pigmentary disorder characterized by grouped multiple lentigines on otherwise normal skin that histologically have the typical features of lentigo. This entity has been only rarely reported in the Korean population. OBJECTIVE: The purpose of this study was to evaluate clinical and histopathologic characteristics, association with other disorders, and differential diagnosis of PUL. METHODS: We reviewed our experiences of thirteen cases of PUL which had been collected in our dermatology clinic during the 6-year period between 1993 and 1998. RESULTS: Twelve patients were female and one was male. In 3 patients the lesions appeared after the age of 20 years. Ten patients had the lesions on the upper part of the body, the neck being the most common location. No bias was shown in terms of the side of the body affected. Cafe-au-lait macules (one to three) were found in six patients, axillary freckles were observed in two. Histopathologic examination of biopsy specimens commonly showed hyperpigmentation of the basal layer, elongation of rete ridges, and an increased number of melanocytes. There ,was no evidence of associated disorders or family history. CONCLUSION: Based on this data, we confirmed that PUL is a benign, idiopathic lentiginosis with no commonly associated abnormalities. Furthermore, we believed that PUL is not uncommon in Korean people.
Bias (Epidemiology) ; Biopsy ; Dermatology ; Diagnosis, Differential ; Female ; Humans ; Hyperpigmentation ; Lentigo ; Male ; Melanocytes ; Melanosis ; Neck ; Skin

Tegafur is a fluoropyrimidine structurally similar to 5-fluorouracil, used in the treatment of advanced gastrointestinal neoplasms. Mucocutaneous side reactions induced by this agent are rare and include photosensitivity of lichenoid and eczematous types, acral erythema, hyperpigmentation and palmoplantar keratoderma. However, to our knowledge, there has been no report of concurrent development of eruptions of two types in a patient. We describe a female patient with breast cancer, presented with combined features of acral erythema and hyperpigmentation due to oral tegafur.
Breast Neoplasms ; Erythema* ; Female ; Fluorouracil ; Gastrointestinal Neoplasms ; Humans ; Hyperpigmentation* ; Keratoderma, Palmoplantar ; Tegafur*