Pityriasis rosea(PR) is a common erythemato-squamous dermatosis which almost always, is easily diagnosed. Mostly the disease presents in its classical form. However, clinical dermatology is all about variations and PR...Pityriasis rosea(PR) is a common erythemato-squamous dermatosis which almost always, is easily diagnosed. Mostly the disease presents in its classical form. However, clinical dermatology is all about variations and PR is not an exception. Variants of the disease in some cases may be troublesome to diagnose and confuse clinicians. Prompt diagnosis and treatment of the condition becomes necessary to avoid unnecessary investigations. We hereby review and illustrate atypical presentations of the disease, including diverse forms of location and morphology of the lesions, the course of the eruption, and its differential diagnoses.展开更多
Actinic lichen planus, a variant of lichen planus usually in people living in the tropics, presents as annular or discoid patches over the sun-exposed regions. We present here a case of actinic lichen planus with papu...Actinic lichen planus, a variant of lichen planus usually in people living in the tropics, presents as annular or discoid patches over the sun-exposed regions. We present here a case of actinic lichen planus with papules and plaques over the malar region and dorsum of nose- a rare presentation of this entity.展开更多
Verrucous epidermal naevus(VEN) is a rare form of epidermal naevus. We present a case of VEN occurring over the perianal region of a 7-year-old boy. The lesion was initially thought to be an area of chronic dermatitis...Verrucous epidermal naevus(VEN) is a rare form of epidermal naevus. We present a case of VEN occurring over the perianal region of a 7-year-old boy. The lesion was initially thought to be an area of chronic dermatitis; however it was refractory to treatment. Histopathology confirmed the diagnosis of VEN. VEN in the inguinogenital region may be misdiagnosed as flexural psoriasis, genital warts or sexual abuse. This is what precisely happened to our patient for a duration of more than 1 year.展开更多
Cutaneous leiomyomas are rare, benign smooth muscle tumors, characterized by painful nodules in most of the cases. They can occur in multiple disseminated, segmental or zosteriform and solitary forms. Segmental or zos...Cutaneous leiomyomas are rare, benign smooth muscle tumors, characterized by painful nodules in most of the cases. They can occur in multiple disseminated, segmental or zosteriform and solitary forms. Segmental or zosteriform leiomyoma can occur either alone(Type Ⅰ), or with scattered nonsegmental lesions elsewhere(Type Ⅱ); the latter variety occurring rarely. Here we present a case of Type Ⅱ zosteriform leiomyoma in a middle aged individual.展开更多
Soil ecosystem is experiencing stresses due to climate change,and soil inhabitants try to demonstrate their inherent resistance and resilience against those stresses.Application of nanomaterials as agricultural inputs...Soil ecosystem is experiencing stresses due to climate change,and soil inhabitants try to demonstrate their inherent resistance and resilience against those stresses.Application of nanomaterials as agricultural inputs could bring shifts in resistance and resilience patterns of soil microbes and associated enzymes,especially under short-term heat stress.With this background,the impacts of multi-walled carbon nanotube(MWCNT)on the resistance and resilience of soil biological indicators were evaluated.An incubation experiment was conducted with varied MWCNT concentrations(0,50,100,250,and 500 mg kg-1soil)for 90 d after 24-h heat stress at 48±2?C to assess the impacts of MWCNT on soil enzyme activities and microbial populations vis-à-vis their resistance and resilience indices under short-term exposure to heat stress.Enzyme activities were reduced after exposure to heat stress.Resistance indices of enzyme activities were enhanced by MWCNT application on day 1 after heat stress,whereas there was no recovery of enzyme activities after 90-d incubation.Like soil enzyme activities,resistance index values of soil microbial populations followed the similar trend and were improved by MWCNT application.Multi-walled carbon nanotube has the potential to improve resistance indices of soil enzyme activities and microbial populations under heat stress,although they could not recover to their original state during periodical incubation after heat stress.This study helps to understand the relative changes of biological indicators under MWCNT and their ability to withstand heat stress.展开更多
文摘Pityriasis rosea(PR) is a common erythemato-squamous dermatosis which almost always, is easily diagnosed. Mostly the disease presents in its classical form. However, clinical dermatology is all about variations and PR is not an exception. Variants of the disease in some cases may be troublesome to diagnose and confuse clinicians. Prompt diagnosis and treatment of the condition becomes necessary to avoid unnecessary investigations. We hereby review and illustrate atypical presentations of the disease, including diverse forms of location and morphology of the lesions, the course of the eruption, and its differential diagnoses.
文摘Actinic lichen planus, a variant of lichen planus usually in people living in the tropics, presents as annular or discoid patches over the sun-exposed regions. We present here a case of actinic lichen planus with papules and plaques over the malar region and dorsum of nose- a rare presentation of this entity.
文摘Verrucous epidermal naevus(VEN) is a rare form of epidermal naevus. We present a case of VEN occurring over the perianal region of a 7-year-old boy. The lesion was initially thought to be an area of chronic dermatitis; however it was refractory to treatment. Histopathology confirmed the diagnosis of VEN. VEN in the inguinogenital region may be misdiagnosed as flexural psoriasis, genital warts or sexual abuse. This is what precisely happened to our patient for a duration of more than 1 year.
文摘Cutaneous leiomyomas are rare, benign smooth muscle tumors, characterized by painful nodules in most of the cases. They can occur in multiple disseminated, segmental or zosteriform and solitary forms. Segmental or zosteriform leiomyoma can occur either alone(Type Ⅰ), or with scattered nonsegmental lesions elsewhere(Type Ⅱ); the latter variety occurring rarely. Here we present a case of Type Ⅱ zosteriform leiomyoma in a middle aged individual.
基金The first author would like to acknowledge the PostGraduate Contingency Grant received from Bihar Agricultural University,India。
文摘Soil ecosystem is experiencing stresses due to climate change,and soil inhabitants try to demonstrate their inherent resistance and resilience against those stresses.Application of nanomaterials as agricultural inputs could bring shifts in resistance and resilience patterns of soil microbes and associated enzymes,especially under short-term heat stress.With this background,the impacts of multi-walled carbon nanotube(MWCNT)on the resistance and resilience of soil biological indicators were evaluated.An incubation experiment was conducted with varied MWCNT concentrations(0,50,100,250,and 500 mg kg-1soil)for 90 d after 24-h heat stress at 48±2?C to assess the impacts of MWCNT on soil enzyme activities and microbial populations vis-à-vis their resistance and resilience indices under short-term exposure to heat stress.Enzyme activities were reduced after exposure to heat stress.Resistance indices of enzyme activities were enhanced by MWCNT application on day 1 after heat stress,whereas there was no recovery of enzyme activities after 90-d incubation.Like soil enzyme activities,resistance index values of soil microbial populations followed the similar trend and were improved by MWCNT application.Multi-walled carbon nanotube has the potential to improve resistance indices of soil enzyme activities and microbial populations under heat stress,although they could not recover to their original state during periodical incubation after heat stress.This study helps to understand the relative changes of biological indicators under MWCNT and their ability to withstand heat stress.
