Search Results for: keratoacanthoma

Development of poorly differentiated invasive squamous cell carcinoma in giant Bowen’s disease: a case report with dermatoscopy

Development of poorly differentiated invasive squamous cell carcinoma in giant Bowen’s disease: a case report with dermatoscopy

…nosis of SCC in a recent study by Rosendahl et al [14]. Especially, white circles were useful clues to differentiate SCC and keratoacanthoma from other raised non-pigmented skin lesions by dermatoscopy. White circle is a new dermatoscopic criterion,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Inverted Follicular Keratosis, Tricholemmoma, and Desmoplastic Tricholemmoma?

…a nonspecific finding, representing as they do spirals of sebaceous ducts through hyperplastic (or neoplastic in the case of keratoacanthoma) infundibula. It is not surprising that squamous eddies are seen commonly in resolving verrucae on a face,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Cutaneous Horn?

…a verruca, a seborrheic keratosis, or a solar keratosis (or an acrokeratosis verruciformis, a hyperkeratosis lenticularis, a keratoacanthoma). Squamous papilloma describes the appearance histopathologic of any digitate or nipple-shaped proliferation…

Differential Diagnosis in Dermatopathology

Discussions

…ith it rationally. Other distinctive expressions of squamous-cell carcinoma are verrucous carcinoma and the various types of keratoacanthoma, among them those in glabrous skin, e.g., “the solitary,” the eruptive, and the so-called giant,…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Keratoacanthomatous verruca vulgaris Verrucous keratoacanthoma 1. Mostly exophytic 1. Mostly endophytic 2. Shallow central crater 2. Deep central crater 3. Smooth border of rete ridges 3. Jagged outline of rete ridges 4. Individual rete ridges not…

Differential Diagnosis in Dermatopathology

Images

Keratoacanthomatous verruca vulgaris Verrucous keratoacanthoma

Metastatic papillary thyroid carcinoma to the nose mimicking basal cell carcinoma: report and review of cutaneous metastases of papillary thyroid cancer

Metastatic papillary thyroid carcinoma to the nose mimicking basal cell carcinoma: report and review of cutaneous metastases of papillary thyroid cancer

…onychia), benign cysts (epidermoid or pilar), pyogenic granuloma and cutaneous malignant neoplasms (basal cell carcinoma and keratoacanthoma) [4,5,7]. Common skin manifestations of metastatic papillary thyroid cancer, in addition to scalp nodules,…