Differential Diagnosis in Dermatopathology

Differential Diagnosis

…igures 12. Mitotic figures may be abnormal 13. No contiguous superficial squamous-cell carcinoma in the form of solar keratosis or Bowens disease 13. Contiguous solar keratosis or Bowens disease not uncommon 14. An underlying proces

Differential Diagnosis in Dermatopathology

Discussions

…are very superficial squamous-cell carcinomas that may remain superficial for the lifetime of a patient or may grow to become metastasizing squamous-cell carcinoma. The same principle applies to Bowens disease. It also is a superficial squamo…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…abnormal cornification throughout a thickened epidermis = Bowens diseaseAt scanning magnification, this superficial expression of squamous-cell carcinoma of one type could be misconstrued as an inflammatory process. By paying heed to attr…

Differential Diagnosis in Dermatopathology

Verruca vulgaris vs. Verrucous solar keratosis

…tinocytes that when present as a keratotic macule or papule on skin damaged badly by sunlight is referred to as solar keratosis. When present as a plaque it is termed Bowens disease, and when present as many papules in the anogenital region it…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Pagetoid Bowens disease Extramammary Paget’s disease 1. Parakeratosis usual 1. Orthokeratosis usual 2. No abnormal pale cells in the stratum corneum 2. Abnormal pale cells in the stratum corneum often 3. Epithelial cells with ab…

Differential Diagnosis in Dermatopathology

Images

Pagetoid Bowens disease Extramammary Paget’s disease

Differential Diagnosis in Dermatopathology

Discussions

…cytes, and melanophages. In some instances, albeit uncommon, a superficial basal-cell carcinoma may progress to become a nodular basal-cell carcinoma. Patches and plaques of superficial basal cell carcinoma may mimic Bowens disease (one type o…