Differential Diagnosis in Dermatopathology

Differential Diagnosis

…men of small blood vessels 19. No neutrophils in the lumen of blood vessels 20. Blood vessels have thick walls and plump endothelial cells 20. No alterations in the wall of blood vessels as a rule 21. “Lymphocytic” vasculitis of an oc…

Differential Diagnosis in Dermatopathology

Nodular scabies vs. Lymphomatoid papulosis

Loss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that be…

Differential Diagnosis in Dermatopathology

Mucha-Habermann disease vs. Secondary syphilis

Loss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that be…

Histologic Diagnosis of Inflammatory Skin Diseases

Mucha-Habermann disease

…hologic Lymphomatoid papulosis is associated with unquestionably abnormal lymphocytes, some of which usually are in mitosis, and often with a mix of inflammatory cells. Erythema multiforme does not show prominent parakeratosis or scale-crust, and th…

Differential Diagnosis in Dermatopathology

Discussions

…ic between Mucha-Habermann disease and secondary syphilis may be difficult because the two diseases have so many attributes in common. Both may be associated with a superficial and deep perivascular and lichenoid infiltrate of mononuclear cells, acan…