Differential Diagnosis in Dermatopathology

Discussions

In a collagenous type of connective tissue nevus, known also as collagenoma, and in a lesion late in the course of morphea, abnormalities of connective tissue are observed mostly in the dermis. Bundles of collagen are thickened throughout the reticu…

Differential Diagnosis in Dermatopathology

Morphea, late stage vs. Collagenous nevus

A generic term for at least two different inflammatory diseases that have in common hardening of the skin by virtue of thickening of bundles of collagen in the dermis and subcutis. One of those diseases manifests itself as localized or widespread pa…

Differential Diagnosis in Dermatopathology

Discussions

The panniculitis of lupus erythematosus, known conventionally as lupus profundus, and the panniculitis of morphea, referred sometimes to as morphea profundus, have several findings histopathologic in common: infiltrates of lymphocytes and plasma cel…