Search Results for: folliculo-sebaceous cyst

An unusual lesion in the right place

An unusual lesion in the right place

…ive role to the pathogenesis of HP [16,22]. The differential diagnosis of HP includes apocrine hidrocystoma, Bartholin gland cyst and syringocystadenoma papilliferum. Malignant transformation is extremely rare. There are five documented cases of…

Differential Diagnosis in Dermatopathology

Discussions

…s” are present in the basal-cell carcinoma; fully-developed lesions, however, are marked by numerous tiny infundibular cyst-like structures. That infundibulocystic basal-cell carcinoma truly is a basal-cell carcinoma and not a benign adnexal…

Histologic Diagnosis of Inflammatory Skin Diseases

Linear IgA dermatosis

…ession of an epidermal nevus, a solitary papule designated acantholytic dyskeratotic acanthoma, the distinctive infundibular cyst named, curiously, “warty dyskeratoma,” and the type of squamous-cell carcinoma designated…

Differential Diagnosis in Dermatopathology

Dermatofibroma vs. Dermatofibrosarcoma protuberans

An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous…

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….

Histologic Diagnosis of Inflammatory Skin Diseases

Darier’s disease and simulators of it

…e related than are acantholytic dyskeratotic acanthoma and Darier’s disease. Warty dyskeratoma, a type of infundibular cyst whose lining is characterized by changes throughout its circumference of acantholytic dyskeratosis, initially was…

Differential Diagnosis in Dermatopathology

Discussions

…tes it, but in some epidermal nevi, a solitary keratosis (acantholytic dyskeratotic acanthoma), and an uncommon infundibular cyst (warty dyskeratoma). Those findings histopathologic occur also as an incidental change confined to a single rete ridge…

Differential Diagnosis in Dermatopathology

Syringocystadenoma papilliferum vs. Hidradenoma papilliferum

An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous…