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 21,279 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A white sponge nevus of the oral mucosa is described in a 12-year-old girl and her 36-year-old mother. This anomaly, which is inherited as an autosomal dominant trait, deserves no treatment. Because of the bilateral involvement, which is found in the majority of cases, the white sponge nevus is often misdiagnosed as therapy-resistant thrush.
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PMID:[White nevus of the oral mucosa]. 42 57

A total of 900 consecutive newborns delivered at the Nehru Hospital, Chandigarh, India, over a period of 7 months were examined for presence of skin lesions within 48 hours of birth. Commonly observed skin lesions were Epstein pearls (88.7%), mongolian spots (62.2%), milia (34.9%), sebaceous hyperplasia (31.8%), salmon patches (28.4%), and erythema toxicum neonatorum (20.6%). These figures are comparable with earlier reports. Impetigo neonatorum occurred in 11.3% of infants, and was frequent in our hot and humid climate from May to August. Traumatic skin lesions were most often present in babies who had forceps deliveries. Three hundred ten (34%) babies were available for follow-up up to six weeks. Additional skin lesions observed were omphalitis (16 babies), oral thrush (9) and postinflammatory hypomelanosis (8). Three infants had atopic dermatitis, two each had seborrheic dermatitis, diaper dermatitis, pityriasis versicolor, and nevus achromicus. One each had vitiligo, ichthyosis vulgaris, urticaria, and strawberry hemangioma. These observations highlight the importance of repeat examination for the appearance of skin lesions during the neonatal period.
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PMID:Survey of cutaneous lesions in Indian newborns. 270 61

In this review, the etiologies of white oral lesions will be discussed. Thrush is the commonest form of oral candidiasis and it is the prototype of pseudomembranous lesions. The latter are whitish lesions that can be easily rubbed off. All patients with erosive or ulcerative lesions of the oral mucosa, e.g. patients with immunobullous diseases, can present with such lesions. Leucokeratosis refers to white, firmly adherent, lesions. A great number of diseases can manifest with such lesions: inflammatory diseases like lichen planus, infectious diseases like chronic candidiasis or hereditary diseases like the white sponge nevus. Leucoplakia refers to keratosic lesions tobacco-induced or that can not be precisely classified clinically. Such lesions are considered premalignant. When other clinical signs like erythema or ulceration are associated, these lesions are often epidermoid carcinomas.
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PMID:[White lesions of the oral mucosa]. 1194 48

White sponge nevus is an autosomal dominant skin disorder characterized by white, irregular, diffuse plaques mainly affecting the oral mucosa. Histological findings of white sponge nevus are characteristic but not pathognomonic. We report a case of an oral white sponge nevus in a 6-year-old girl, which poses a problem in differential diagnosis with oral candidiasis. No treatment was performed because of the benign and asymptomatic nature of the lesions.
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PMID:Oral White Sponge Nevus: An Exceptional Differential Diagnosis in Childhood. 3290 20

The pandemic COVID-19 is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and it is spreading very rapidly worldwide. To date, the origin and intermediate hosts of SARS-CoV-2 remain unclear. In this study, we conducted comparative analysis among SARS-CoV-2 and non-SARS-CoV-2 coronavirus strains to elucidate their phylogenetic relationships. We found: 1, the SARS-CoV-2 strains analyzed could be divided into 3 clades with regional aggregation; 2, the non-SARS-CoV-2 common coronaviruses that infect humans or other organisms to cause respiratory syndrome and epizootic catarrhal gastroenteritis could also be divided into 3 clades; 3, the hosts of the common coronaviruses closest to SARS-CoV-2 were Apodemus chevrieri (a rodent), Delphinapterus leucas (beluga whale), Hypsugo savii (bat) , Camelus bactrianus (camel) and Mustela vison (mink); and 4, the gene sequences of the receptor ACE2 from different hosts could also be divided into 3 clades. The ACE2 gene sequences closest to that of humans in evolution include those from Nannospalax galili (Upper Galilee mountains blind mole rat), Phyllostomus discolor (pale spear-nosed bat), Mus musculus (house mouse), Delphinapterus leucas (beluga whale), and Catharus ustulatus (Swainson's thrush). We conclude that SARS-CoV-2 may have evolved from a distant common ancestor with the common coronaviruses but not a branch of any of them, implying that the prevalent pandemic COVID-19 agent SARS-CoV-2 may have existed in a yet to be identified primary host for a long time.
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PMID:Comparative analysis of SARS-CoV-2 and its receptor ACE2 with evolutionarily related coronaviruses. 3318 21