Histologic Diagnosis of Inflammatory Skin Diseases

Subcutaneous T-cell lymphoma

…mis and subcutaneous fat. Histiocytosis X (Langerhans” cell histiocytosis) consists of a dense infiltrate of abnormal Langerhans” cells characterized by large, pale, reniform nuclei and abundant amphophilic cytoplasm, many eosinophils,…

Differential Diagnosis in Dermatopathology

Granular-cell tumor vs. Xanthoma

Malignant neoplasms of B-lymphocytes especially that present themselves usually as papules, nodules, and tumors, sometimes solitary but at other times numerous, and often in clusters on any anatomic site. When “primary,” B-cell lymphomas o…

Differential Diagnosis in Dermatopathology

Trichoepithelioma vs. Infundibulocystic basal-cell carcinoma

Malignant neoplasms of B-lymphocytes especially that present themselves usually as papules, nodules, and tumors, sometimes solitary but at other times numerous, and often in clusters on any anatomic site. When “primary,” B-cell lymphomas o…

Differential Diagnosis in Dermatopathology

Apocrine (clear-cell) hidradenoma vs. Eccrine (poroid) hidradenoma

Malignant neoplasms of B-lymphocytes especially that present themselves usually as papules, nodules, and tumors, sometimes solitary but at other times numerous, and often in clusters on any anatomic site. When “primary,” B-cell lymphomas o…

Differential Diagnosis in Dermatopathology

"Pseudolymphoma," B-cell type vs. Malignant lymphoma, B-cell type

Malignant neoplasms of B-lymphocytes especially that present themselves usually as papules, nodules, and tumors, sometimes solitary but at other times numerous, and often in clusters on any anatomic site. When “primary,” B-cell lymphomas o…

Dermatology Practical & Conceptual

Balloon cell melanoma in primary care practice: a case report

…thelioid melanocytes, exhibiting a pseudo-xanthomatous balloon cell change in their cytoplasm, and pleomorphic vesicular nuclei with nucleoli. These cells did not mature with descent, exhibited 4 mitoses per mm2 and filled the dermis to a depth of 2…