A Clinical Atlas of 101 Common Skin Diseases

Nevus Sebaceus

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesio…

Differential Diagnosis in Dermatopathology

Discussions

Syringocystadenoma papilliferum and hidradenoma papilliferum are both apocrine papillated cystadenomas. Clinically, syringocystadenoma papilliferum appears at birth or in early childhood as a crusted, often weeping, verrucous plaque, usually on the…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Basal-Cell Carcinoma Common in Nevus Sebaceus?

…alignancies and benign tumors of the epidermis and appendages. Syringocystadenoma papilliferum and basal-cell carcinoma are the most frequently found complications.” Serpas De Lopez RME, Hernandez-Perez E. Jadassohn’s sebaceous nevus. J D…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine Neoplasms?

…ributes are present in various adnexal proliferations, such as syringocystadenoma papilliferum, hidradenoma papilliferum, and apocrine mixed tumor. Mature cells that compose normal sebaceous glands are characterized by abundant vacuolated cytoplasm t…

Differential Diagnosis in Dermatopathology

Images

Syringocystadenoma papilliferum Hidradenoma papilliferum

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Syringocystadenoma papilliferum Hidradenoma papilliferum 1. Not truly cystic (not a sac enclosed by epithelium) 1. Truly cystic (a sac enclosed completely or almost completely by epithelium) 2. Surface of skin papillated and hyperkeratotic 2….

Differential Diagnosis in Dermatopathology

Discussions

…bnormalities may become manifest in nevus sebaceus, especially syringocystadenoma papilliferum, various benign and malignant neoplasms of sebaceous, eccrine, apocrine, or follicular differentiation, and follicular and apocrine cysts and cystic hamart…

Differential Diagnosis in Dermatopathology

Sebaceous hyperplasia vs. Nevus sebaceus of Jadassohn

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesio…