Differential Diagnosis in Dermatopathology


…pilliferum. Those infundibula of epidermis connect directly to surface epidermis. The association, episodically, between syringocystadenoma papilliferum and nevus sebaceus of Jadassohn is well established. Many authors contend that this phenomenon oc…

Differential Diagnosis in Dermatopathology

Pigmented Lesions

…) Proliferation of fibrocytes and histiocytes (lipophages and siderophages early in the course) in a mass in the reticular dermis, those cells appearing to be splayed between thickened bundles of collagen at the lateral margins. Melanin increased in…

Differential Diagnosis in Dermatopathology

See Classification of Pigmented Lesions

…l type Nevoid hyperkeratosis of the nipple Benign neoplasms Solar lentigo, including lichen planus-like keratosis Seborrheic keratosis Malignant neoplasms Basal cell carcinoma, pigmented Solar keratosis, pigmented Melanocytic lesions Benig…

Differential Diagnosis in Dermatopathology

Syringocystadenoma papilliferum vs. Hidradenoma papilliferum

…by markedly edematous acuminate papules and edematous plaques situated mostly on the face, upper part of the trunk, and arms, especially the hands, and often accompanied by fever and leukocytosis. It may be idiopathic or a manifestation of a systemi…

Histologic Diagnosis of Inflammatory Skin Diseases


…busch LR von. Psoriasis and pustuloses exanthem. Arch Dermatol Syphilol 1910;99:335–46. Bibliography for guttate parapsoriasis Brocq L. Les parapsoriasis. Ann Dermatol Syphiligr 1902; 3:433. Endlitz. Ann Dermatol Paris 1898;ix:132. Jadassohn J. Ueber…

Differential Diagnosis in Dermatopathology


Sebaceous hyperplasia Nevus sebaceus of Jadassohn