Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Subcorneal Pustular Dermatosis?

…“The consistent finding in our cases of pustules in the subcorneal position provides a distinctive feature which separates this condition [subcorneal pustular dermatosis] from the others we have mentioned. We therefore prefer to regard these c…

Differential Diagnosis in Dermatopathology

Discussions

Both sebaceous hyperplasia and nevus sebaceus of Jadassohn consist of abnormalities of sebaceous glands but the former, as the name denotes, is a hyperplasia, whereas the latter is a hamartoma that involves not only sebaceous units, but other adnexa…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Halo Phenomenon?

“This study supports the concept that the halo nevus should not be regarded as a single clinicopathological entity, but rather that the halo phenomenon occurs in a wide spectrum of nevus types exhibiting a wide spectrum of histological atypia…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Chondrodermatitis Nodularis Helicis?

“At the dermatology meeting in Berlin, Jadassohn also indicated that changes in the cartilage can often be established clinically, especially the knobby sites on the helix that show a whitish transparence through a thinned epidermis. My expe…

Differential Diagnosis in Dermatopathology

Images

Sebaceous hyperplasia Nevus sebaceus of Jadassohn

Differential Diagnosis in Dermatopathology

Discussions

…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

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

Psoriasis

…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…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema annulare centrifugum

Erythema annulare centrifugum Synonyms Erythema perstans Erythema gyratum perstans Erythema figuratum perstans Presentation stereotypical Age and sex Middle-aged or older adults of both sexes; children sometimes Distribution of lesions Any part of t…