background. the most common species isolated from primary endodontic infections are black-pigmented bacteria. these species are implicated in apical abscess formation due to their proteolytic activity and are fastidious in nature. therefore, the present study was carried out to evaluate the presence and identification of various pigmented porphyromonas and prevotella species in the infected roo...

Mature female leopard frogs, Rana pipiens, collected from several sites in Minnesota from 1967 through 1977, were examined for the presence of pigmented oocytes. An increase in the percent of mature females with pigmented oocytes was observed in the frogs captured in 1977 compared to those captured earlier. Coincident with the increase in prevalence of females with pigmented oocytes, there was ...

BACKGROUND The pigmented or melanotic variant of choroid plexus carcinoma is very rarely encountered. CASE REPORT We report herein a case of melanotic or pigmented choroid plexus carcinoma in the posterior fossa of an 11-year-old female. CONCLUSIONS A histopathological study supported by immunohistochemistry helped the authors to diagnose this rare entity. How to differentiate this tumor fr...

Several pigment-specific lasers can effectively treat epidermal and dermal pigmented lesions without complications using the basic principles of selective photothermolysis. Although such pigmented lesions as solar lentigines and nevi of Ota are relatively easy to treat using pigment-specific laser technology, café-au-lait macules and melasma show variable responses to treatment. New, long-pulse...

Background and aim: Pigmented purpuric dermatoses are a group of chronic and recurrent skin diseases resulting from lymphocyte-mediated leakage of erythrocytes. No effective treatment has been suggested for these conditions. This study was performed to evaluate the efficacy of oral pentoxiphylline in the treatment of pigmented purpuric dermatoses.Materials and Methods: ...

Abstract Introduction Many patients diagnosed with amelanotic melanoma (AM) have often gone undetected for a long time due to the difficulty in diagnosis of these skin lesion, likely causing underestimation prevalence AM Ireland. This study aims determine associated risk factors, incidence, and an Irish population. Aim Determine true staging melanoma. Method is retrospective cohort diagnoses ma...

Differential diagnoses of pigmented lesions of the nipple include melanocytic nevus, melanosis of the nipple, seborrheic keratosis, pigmented basal cell carcinoma, melanoma and Paget disease. The histologic exam with appropriate immunohistochemistry is a fundamental tool to achieve a correct diagnosis. We present a patient with a pigmented lesion of her right nipple revealing mammary Paget dise...