Ulcerative lichen planus of the feet is a rare variant of lichen planus. We report a case presenting with chronic painful ulceration of the feet and cicatricial changes of the toenails. The pathology of the ulceration showed diagnostic of lichen planus. She also had typical lichen planus on the dorsal hands. The ulceration was resistant to many kinds of topical agents, but completely healed wit...

Dysphagia is not uncommon in gastroenterology practice. The differential diagnosis is wide and includes both mechanical and motility causes. Esophageal lichen planus is uncommon but now increasingly recognized. It occurs in more than half of cases of lichen planus with muco-cutaneous involvement. Often there is a delay in diagnosis and subsequent treatment. The endoscopic picture of esophageal ...

Here we reveal the diversity of the next fragment of the Malagasy elements of the ant genus Nesomyrmex using a combination of advanced exploratory analyses on quantitative morphological data. The diversity of the Nesomyrmex madecassus species-group was assessed via hypothesis-free nest centroid clustering combined with recursive partitioning to estimate the number of clusters and determine the ...

Johansson, P. 2006. Effects of habitat conditions and disturbance on lichen diversity: studies on lichen communities in nemoral, boreal and grassland ecosystems. Doctor’s dissertation. ISSN 1652-6880, ISBN 91-576-7055-2 This thesis includes five papers from four studies on lichen diversity in its broad sense. The overall objectives were to examine species richness, composition, distribution, an...

The crude extract contains many compounds along with the various lichen metabolites and it is very difficult to say which compound(s) has the antioxidant potential unless and until it is purified. In the previous Chapter 3 & 4 the biological activities of Usnea ghattensis attributed to the crude extract containing usnic acid and norstictic acid have been presented. In order to know the antioxid...

Lichen planus is an uncommon disease in children, and only 2 to 3% of affected patients are under twenty years of age. This dermatosis may appear in several clinical forms, which vary according to the morphology and distribution of lesions. In less than 0.2% of all lichen planus cases, the lesions are distributed along the lines of Blaschko, and is a variant called linear lichen planus. This is...

References 1. Daoud MS, Pittelkow MR. Lichen planus. In: Goldsmith LA, Katz SI, Gilchrest BA, Paller AS, Leffell DJ, Wolff K, editors. Fitzpatrick’s Dermatology in General Medicine. 8th ed. New York: McGraw-Hill; 2012. p. 296-312. 2. Weedon D. Weedon’s Skin Pathology. 3rd ed. London: Churchill Livingstone Elsevier; 2010. 3. Hanau D, Sengel D. Perforating lichen planus. J Cutan Pathol 1984;11:17...

PURPOSE To describe a case of cicatricial keratoconjunctivitis associated with lichen planus. METHODS Case report. RESULTS To our knowledge, this is the sixth reported case of cicatricial keratoconjunctivitis associated with lichen planus. A 73-year-old woman had persistent cicatricial keratoconjunctivitis. Histopathologic studies of the buccal mucosa biopsy specimen revealed lichen planus....

oral lichen planus is diagnosed according to clinical and histopathological characteristics.some times all of the classical  histopathological features can not be seen.in some articles the presence of mast cells have been noted below the epithelium of oral lichen planus patients.the following study was done to evaluate the number of mast cells in the histopathological sections of 20 oral lichen...

Background. Lichen Planus is a chronic mucocutaneous disease of immunological basis and unknown etiology. women with oral lichen planus may have concomitant manifestations in vulvovaginal areas. Objective. To determine the frequency and risk factors of genital involvement in a group of Iranian women affected by oral lichen planus. Methods. Thirty-six women with clinical and histopathological di...