Biopsy of the lesion reveals epidermal invagination with keratotic plug.
Jayme Eduardo Burmeister, Diego da Rosa Miltersteiner, Marcelo Campos Appel da Silva,Claudio Galeano Zettler, Luciana Weis 2011, 'Caso para diagnóstico Case for diagnosis', Anais Brasileiros de Dermatologiahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0365-05962011000200034. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The lesions were mostly linear but some were oval with keratotic border and atrophied center.
Chatterjee Tapas Kumar, Sadhu Sisir Kumar 1997, 'Porokeratosis Plantaris, Palmaris Et Disseminata', Indian Journal of Dermatologyhttp://www.e-ijd.org/article.asp?issn=0019-5154;year=1997;volume=42;issue=1;spage=32;epage=34;aulast=Chatterjee;type=0. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Histopathological examination of the keratotic plug revealed findings of distinct epidermal depressions containing cornoid lamellae.
Vera Barreto Teixeira, José Pedro Reis, Ricardo Vieira, Óscar Tellechea, Américo Figueiredo 2013, 'Unilateral punctate porokeratosis - Case report Poroceratose punctata unilateral -Relato de caso', Anais Brasileiros de Dermatologiahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0365-05962013000300441. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Three young females with keratotic papular lesions on the chin are reported.
Rajeev Sharma, A J Kanwar, Anil Abraham, Surrinder Kaur, B D Radotra 1990, 'Keratotic papules on chin', Indian Journal of Dermatology, Venereology and Leprologyhttp://www.ijdvl.com/article.asp?issn=0378-6323;year=1990;volume=56;issue=5;spage=391;epage=392;aulast=Sharma. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Clinical examination revealed multiple hyperpigmented keratotic papulonodular lesions over bilateral legs and few on feet.
Rameshwar M Gutte 2016, 'Acitretin: A good treatment option for hypertrophic lichen planus', Indian Journal of Drugs in Dermatologyhttp://www.ijdd.in/article.asp?issn=2455-3972;year=2016;volume=2;issue=1;spage=28;epage=30;aulast=Gutte. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Similar changes were seen in keratotic plugs of dilated follicular infundibula.
Joshi R, Taneja A 2008, 'Granular parakeratosis presenting with facial keratotic papules', Indian Journal of Dermatology, Venereology and Leprologyhttp://www.ijdvl.com/article.asp?issn=0378-6323;year=2008;volume=74;issue=1;spage=53;epage=55;aulast=Joshi. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
There were 87 keratotic tumours, 39 adnexal tumours, and 24 melanocytic tumours.
Prakriti Shukla, Uroos Fatima, Anil K. Malaviya 2016, 'Histomorphological and Immunohistochemical Reappraisal of Cutaneous Adnexal Tumours:A Hospital Based Study', Scientificahttp://dx.doi.org/10.1155/2016/2173427. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Mohan L, Mukhija R, Arora S, Sharma S, Mishra R 1990, 'Disseminated superficial actinic porokeratosis', Indian Journal of Dermatology, Venereology and Leprologyhttp://www.ijdvl.com/article.asp?issn=0378-6323;year=1990;volume=56;issue=2;spage=156;epage=157;aulast=Mohan. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Clinical examination revealed keratotic areas and superficial ulcers on lower lip vermillion.
Taha Unal, Huseyin Koca, Candan Efeoglu 2011, 'Aktinik şelitis tedavisinde 5-fluorourasıl (5-fu) kullanımı: derleme ve iki olgununsunumu', Cumhuriyet Dental Journalhttp://dergi.cumhuriyet.edu.tr/ojs/index.php/dishekimligi/article/view/1133. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Presence of keratotic lesions and histopathology led to a diagnosis of acrokeratosis verruciformis.
Mishra Dharmendra, Singh Arun 1995, 'Acrokeratosis verruciformis of Hopf', Indian Journal of Dermatology, Venereology and Leprologyhttp://www.ijdvl.com/article.asp?issn=0378-6323;year=1995;volume=61;issue=6;spage=357;epage=357;aulast=Mishra. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)