2013
DOI: 10.1590/abd1806-4841.20131809
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Abstract: This case report involves a 20-year-old man with unilateral punctate porokeratosis. The patient presented an 8-year history of numerous asymptomatic keratotic papules and pits with linear distribution on his left pal-mar surface and fifth finger of the left hand. Histopathological examination of the keratotic plug revealed findings of distinct epidermal depressions containing cornoid lamellae. This report review draws attention to differential diagnoses of punctate porokeratosis.

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Cited by 7 publications
(5 citation statements)
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References 12 publications
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“…7 While clinically and histologically comparable to PP, spiny keratoderma is a distinct diagnosis that exhibits a similarly diminished stratum granulosum and columns of parakeratosis but usually lacks the dyskeratotic keratinocytes of PP. 6,8 Other clinical entities may mimic PP, including keratosis puncta of the palmar creases, arsenical keratosis, and nevus comedonicus. Keratosis puncta of the palmar creases is a benign condition and variant of punctate keratoderma that occurs most commonly in African American patients.…”
Section: Discussionmentioning
confidence: 99%
“…7 While clinically and histologically comparable to PP, spiny keratoderma is a distinct diagnosis that exhibits a similarly diminished stratum granulosum and columns of parakeratosis but usually lacks the dyskeratotic keratinocytes of PP. 6,8 Other clinical entities may mimic PP, including keratosis puncta of the palmar creases, arsenical keratosis, and nevus comedonicus. Keratosis puncta of the palmar creases is a benign condition and variant of punctate keratoderma that occurs most commonly in African American patients.…”
Section: Discussionmentioning
confidence: 99%
“…Las variantes más comúnmente descritas de poroqueratosis son la forma clásica de Mibelli, la poroqueratosis diseminada superficial actínica (DSAP, de su nombre en inglés, disseminated superficial actinic porokeratosis), la poroqueratosis diseminada superficial, la poroqueratosis linear, la poroqueratosis palmaris et plantaris disseminata y la poroqueratosis punctata (PP) [3]. Las dos primeras mencionadas son las formas más frecuentes, observándose en ellas las lesiones típicas de este desorden: pápulas queratósicas que evolucionan de forma centrífuga hasta constituir lesiones anulares, demarcadas, de centro atrófico y con una periferia hiperqueratósica solevantada, pudiendo ser asintomáticas o asociadas a prurito [2].…”
Section: Discussionunclassified
“…Para completar el cuadro histológico, queratinocitos vacuolados y/o disqueratósicos deben observarse en el estrato espinoso subyacente [1]. Junto a esto se ha descrito también un compromiso inflamatorio de la dermis de tipo linfohistiocitario [1][2][3].…”
Section: Discussionunclassified
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