A physician is reviewing several skin biopsy reports from different patients evaluated in an outpatient dermatology clinic. To finalize the clinical assessments, identify the correct condition for each microscopic finding. Match each classic histopathological description to its most accurate definitive diagnosis.
- Basal cell carcinomaNests of atypical cells with peripheral palisading and characteristic retraction artifact (clefting) from the surrounding stroma.
- Squamous cell carcinomaInvasive islands of atypical keratinocytes demonstrating prominent intercellular bridges and central keratin pearls.
- MelanomaAsymmetric, poorly circumscribed proliferation of atypical pigment-producing cells with pagetoid upward migration into the epidermis.
- PsoriasisRegular epidermal hyperplasia with elongated rete ridges, absent granular layer, and collections of neutrophils in the stratum corneum.
- Bullous pemphigoidSubepidermal cleavage plane forming a tense blister space accompanied by a dense, eosinophil-rich inflammatory infiltrate.
Cevap
Basal cell carcinoma matches with peripheral palisading and clefting. Squamous cell carcinoma matches with intercellular bridges and keratin pearls. Melanoma matches with asymmetric proliferation and pagetoid spread. Psoriasis matches with elongated rete ridges and neutrophils in the stratum corneum. Bullous pemphigoid matches with subepidermal blisters and an eosinophil-rich infiltrate.
Definitive diagnosis in dermatology heavily relies on correlating clinical morphology with microscopic biopsy findings. Basal cell carcinoma uniquely features basaloid nests with peripheral palisading. Squamous cell carcinoma shows invasive atypical keratinocytes with keratin pearl formation. Melanoma is identified by asymmetric, atypical melanocytic proliferation with upward epidermal (pagetoid) spread. Psoriasis displays uniform epidermal hyperplasia (elongated rete ridges) and collections of neutrophils. Bullous pemphigoid is characterized by full-thickness epidermal separation (subepidermal blister) packed with eosinophils.
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Anahtar Kavram
Histopathological hallmarks of common dermatologic diseases and cutaneous malignancies.