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A Clinical Atlas of 101 Common Skin Diseases

Lymphomas (Other Than Mycosis Fungoides and Lymphomatoid Papulosis)

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…

A Clinical Atlas of 101 Common Skin Diseases

Mycosis Fungoides

A systemic lymphoma of T-lymphocytes that manifests itself first in the skin as macules and then patches that often are scaly. Most people with the disease have only scaly macules and patches for a lifetime, but some patients may develop papules, pl…

Differential Diagnosis in Dermatopathology

Pagetoid Bowen’s disease vs. Extramammary Paget’s disease

A systemic lymphoma of T-lymphocytes that manifests itself first in the skin as macules and then patches that often are scaly. Most people with the disease have only scaly macules and patches for a lifetime, but some patients may develop papules, pl…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

…oma such as that manifestation of mycosis fungoides designated pagetoid reticulosis (Woringer-Kolopp disease) shown here, some spongiosis is inevitable, although only a tiny fraction of what would have been induced by lymphocytes of an inflammatory d…

Differential Diagnosis in Dermatopathology

Discussions

…that “signet-ring cells” come into being commonly. Pagetoid Bowen’s disease and extramammary Paget’s disease also must be differentiated histopathologically from pagetoid melanoma in situ because some examples of that malignan…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…in mycosis fungoides, this being the expression of it known as pagetoid reticulosis (Waringer-Kolopp disease). 11.14.23A: Perivascular dermatosis, spongiotic lichenoid + 11.14.23B: Lymphocytes in the epidermis larger than those in the dermi…

Dermatology Practical & Conceptual

Nail matrix melanoma: consecutive cases in a general practice

…0, panmelanoma and HMB45) show an increase in melanocytes with Pagetoid spread and some plump cells. These changes are those of an evolving level 1 (in-situ) acral melanoma. The Melan A stain shows less Pagetoid spread but still some plump melanocyte…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Cytophagic Panniculitis?

…ermatol 2004;21(3):246-49. We consider histiocytic medullary reticulosis and cytophagic panniculitis to be different names for the same lymphoma. The term histiocytic medullary reticulosis was the first term given to a condition then thought to be…

Dermatology Practical & Conceptual

Strategies for early recognition of cutaneous melanoma-present and future

…of roundish cells in superficial layers spreading upward in a pagetoid fashion, pagetoid cells widespread throughout the lesion, cerebriform clusters within the papillary dermis and bright nucleated cells in the upper dermis. The presence of at leas…

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