Tezuka T
Acta Derm Venereol. 1976;56(2):105-10.
The palmar and plantar pits of keratosis punctata palmaris et plantaris were examined histologically in both vertical and horizontal sections. Pits were located in the crista superficialis epidermis, especially in the orifice of the sweat duct, but no iodine-starch reaction was detected in pits by perspiration testing. In the center of a pit was a parakeratotic wedge, deflecting the squamous cell layers downwards. The sweat duct was found in this parakeratotic wedge, and was occasionally obstructed.
对掌跖点状角化病的掌跖凹进行了垂直和水平切片的组织学检查。凹位于表皮浅表嵴，特别是在汗腺导管开口处，但通过出汗试验在凹中未检测到碘淀粉反应。凹的中心是一个不全角化楔形物，使鳞状细胞层向下偏斜。在这个不全角化楔形物中发现了汗腺导管，且偶尔会阻塞。
