been a sufferer from psoriasis for 18 years, and has tried practically everything in the line of treatment both internal and external, the ay-rays alone excepted. He is firmly convinced that psoriasis is not of parasitic or microbic origin, but is a cutaneous manifestation, due to faulty metabolism, in fact a sort of autointoxication. In sections of most recent psoriatic lesions excised from hi...

Abstract Background A hypertrophic / vegetating variant of Darier disease causing massive verruciform genital tumors is exceedingly rare. Case presentation woman in her late 50s underwent wide resection vulva and inguinal skin due to lesion. She had crusted keratotic plaques with appearance follicular keratosis (with a greasy, warty texture) the back, neck, face, extremities for 27 years. Previ...

The red mite of poultry, Dremanyssus gallinae, is the most important hematophagous ectoparasite of poultry. In this study, pathologic changes of its biting on the poultry skin have been investigated. Thirty-two (Control = 16 and Treatment = 16) four weeks old Ross broilers (308) were infested with the mite on skin of hock joins. Samples were collected after 1, 24, 72 hours and 10 days. The skin...

Circumscribed palmoplantar hypokeratosis (CPH) is a rare acquired dermatosis first described in 2002. It affects mostly the thenar or hypothenar eminences of palm middle-aged elderly women and manifests clinically with sharply limited, annular erythematous plaques depressed surface, rimmed by slightly raised, keratotic border. Microscopically, circumscribed shows sharp decrease horny layer thic...

Craniopharyngiomas are extremely rare epithelial tumors of the sellar region in human beings and domestic and laboratory animals. A craniopharyngioma, 0.6 cm in diameter, was observed grossly in the sellar and parasellar regions of an untreated 23-month-old male Wistar-derived rat sacrificed moribund. The tumor was composed of cords, columns, and nests of neoplastic stratified squamous epitheli...

PLA2 (phospholipase A2) group III is an atypical sPLA2 (secretory PLA2) that is homologous with bee venom PLA2 rather than with other mammalian sPLA2s. In the present paper, we show that endogenous group III sPLA2 (PLA2G3) is expressed in mouse skin and that Tg (transgenic) mice overexpressing human PLA2G3 spontaneously develop skin inflammation. Pla2g3-Tg mice over 9 months of age frequently d...

The keratocystic odontogenic tumor is a benign odontogenic cystic neoplasia characterized by its thin, squamous epithelium with superficial parakeratosis. It has the potential for infiltration and local aggressiveness and has a high rate of recurrence. This neoplasia is predominantly found in males and people of white origin. The mandible is the most frequently involved site, in particular the ...

Verruciform xanthoma (VX) is a rare benign mucocutaneous lesion that typically presents as solitary asymptomatic verrucous growth. Histopathologic examination remains the cornerstone of diagnosis, which shows subepithelial lipid-laden foamy histiocytes associated with papillomatosis, parakeratosis, and dyskeratosis. Previous studies have reported oral cavity as the most common site of VX. Howev...

Vulvar lymphangioma circumscriptum (LC) is a rare entity which may present as a painful, warty lesion. In contrast to the congenital form, which occurs in children, the acquired form arises in older adults and may be associated with infection, Crohn's disease, or prior pelvic/regional surgery. We present a case of acquired LC of the vulva in a 55-year-old woman who presented with a 3-4 year his...

Lethal trait A46, also known as bovine hereditary zinc deficiency, Adema disease, and hereditary parakeratosis, is an autosomal recessive disorder first described in 1964, with a clinical presentation similar to that of acrodermatitis enteropathica (AE) in humans. The molecular basis of the defect has not been previously identified. Recently, the basic defect in AE was found to lie in SLC39A4. ...