arsenical keratosis

ar·sen·i·cal ker·a·to·sis

multiple punctate keratoses, most commonly of the palms and soles but also of the fingers and proximal portions of the extremities, resulting from long-term arsenic ingestion; they resemble Bowen disease microscopically and may become squamous cell or basal cell carcinoma.
References in periodicals archive ?
premalignant (Solar keratosis, arsenical keratosis, Bowen's disease) or malignant (Squamous cell carcinoma, rarely, basal cell carcinoma, metastatic renal carcinoma, granular cell tumor, sebaceous carcinoma or Kaposi's sarcoma.
5 The disease should be differentiated from arsenical keratosis, porokeratotic eccrine ostial and dermal duct nevus, porokeratosis palmaris et plantaris disseminate and punctate porokeratotic keratoderma which may have same presentation.
Arsenical keratosis appears as diffuse thickening involving palms and soles, alone or in combination with nodules usually symmetrically distributed.
Our patient came from an endemic area where levels of arsenic are high in drinking water and had features of arsenical keratosis for past fifteen years along with metastatic testicular cancer at the time of presentation.
Hypomelanotic guttate macules on diffuse hyperpigmentation and arsenical keratosis may be formed.
Similarly the premalignant and malignant conditions associated with the horns7,8 include adenoacanthoma, actinic keratosis, Bowen's disease, arsenical keratosis, Paget's disease, Kaposi sarcoma, malignant melanoma, sebaceous carcinoma9 and squamous cell carcinoma.