Dermatopathology

For Residents

Stains and Smears: Resident Guide to Bedside Diagnostic Testing

Author:

Roman Bronfenbrener, MD

Dermatology residents often are on the front line when it comes to treating patients with complicated skin disorders, frequently seeing these...

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Dermpath Diagnosis

Granular Cell Tumor

Author:

Victoria Vaughan, BA

Tammie Ferringer, MD

Granular cell tumors (GCTs) tend to present as solitary nodules, not uncommonly affecting the dorsum of the tongue but also involving the skin,...

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Article

Nodular Extramammary Paget Disease With Fibroepitheliomatous Hyperplasia

Author:

Joung Soo Kim, MD, PhD

Myeong Gil Jeong, MD

Extramammary Paget disease (EMPD) is a rare skin condition usually found in the anogenital region. Histologically, EMPD may be associated with...

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Photo Challenge

Hypopigmented Facial Papules on the Cheeks

Author:

Janelle M. King, MD

Matthew J. Meier, MD

Diya F. Mutasim, MD

A 73-year-old woman presented with multiple mildly pruritic, hypopigmented, thin papules involving both cheeks of 5 months’ duration. The patient...

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Contact Dermatitis

Sulfur Spring Dermatitis

Author:

Chieh-Chi Lee, MD

Yu-Hung Wu, MD

Thermal sulfur baths are a form of balneotherapy promoted in many cultures for improvement of skin conditions; however, certain uncommon skin...

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Dermpath Diagnosis

Clear Cell Fibrous Papule

Author:

Ryan Yu, MD

Samih Salama, MD, FRCPC

Salem Alowami, MB Bch, FRCP

A fibrous papule is a common benign lesion that usually presents in adults on the face, especially on the lower portion of the nose.

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Article

Cutaneous Adenosquamous Carcinoma: A Rare Neoplasm With Biphasic Differentiation

Author:

Vikas Patel, MD

Stephen M. Squires, MD

Deede Y. Liu, MD

Cutaneous adenosquamous carcinoma (cASC) is an extremely rare malignant neoplasm. Due to its disputed pathophysiology, ambiguity of presentation,...

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Dermpath Diagnosis

Lipidized Dermatofibroma

Author:

Amanda F. Marsch, MD

Ramayee Periakaruppan, MD

Marylee Braniecki, MD

Lipidized dermatofibromas most commonly are found on the ankles, which has led some authors to refer to these lesions as ankle-type fibrous...

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Article

Pemphigus Vulgaris in Pregnancy

Author:

Kelsey W. Salzberg, MD

Melanie J. Gero, MD

Bruce D. Ragsdale, MD

We report the case of a 34-year-old woman who was diagnosed with pemphigus vulgaris (PV) during pregnancy. The patient presented with widespread...

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Article

Granulomatous Changes Associated With Pigmented Purpuric Dermatosis

Author:

Kelly Morrissey, MD

Misha Rosenbach, MD

Danielle Dehoratius, MD

Granulomatous pigmented purpuric dermatosis (GPPD) is a rare entity with few cases reported in the literature. We report 3 cases of pigmented...

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Dermpath Diagnosis

Subcutaneous Panniculitislike T-Cell Lymphoma

Author:

Anthony J. Kruse, BA

Claudia I. Vidal, MD, PhD

Subcutaneous panniculitislike T-cell lymphoma is a cutaneous lymphoma of α and β phenotype cytotoxic T cells in which the neoplastic cells are...

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