Figure 16.1 Posterior neck showing folliculitis (Sycosis nuchae) Clinical Differential Diagnosis Folliculitis Adnexal tumor Cysts Acne keloidalis Diagnosis FOLLICULITIS is defined as inflammation of the pilosebaceous unit (Fig. 16.2). Clinically,…
Figure 10.1 Kaposi sarcoma presents as a brownish purple nodule Clinical Differential Diagnosis Lymphoma Leukemia Metastatic malignancy Angiosarcoma Kaposi sarcoma Infection Histopathology A 4 mm punch biopsy was performed on…
Figure 8.1 Condyloma acuminata on patient’s penile shaft Clinical Differential Diagnosis Epidermal nevus Seborrheic keratosis Condyloma acuminata Condyloma lata Histopathology A shave biopsy was performed on the patient’s penile shaft….
Figure 13.1 Impetigo, a “honey crusted” covering an erythematous base Clinical Differential Diagnosis Impetigo Contact dermatitis Scabies Candidiasis Diagnosis IMPETIGO (bacterial) is a common infection of the skin that is…
Figure 6.1 Molloscum contagiosum Clinical Differential Diagnosis Milia cyst Pyogenic granuloma Sebaceous hyperplasia Molloscum contagiosum Keratoacanthoma Papular granuloma annulare Fungal infections Histopathology The biopsy specimen from the left cheek measured…
Figure 14.1 H&E 100× Leprosy. A granulomatous inflammation with scant lymphocytic infiltrates (Polar Tuberculoid Leprosy pattern) Tuberculoid leprosy represents the immunologically stable, pauci-bacillary form of the disease. It is characterized…
Figure 12.1 H&E 40×, ORF Figure 12.2 H&E 100×, ORF There are reported cases of Orf infection triggering erythema multiforme, secondary bacterial infections, generalized papular or morbilliform reactions, as well…
Figure 11.1 H&E 400× Hand foot mouth disease The changes of allergic or atopic dermatitis which typically contains variable number of eosinophils are not found in this case. Treatment Options…
Figure 7.1 Verruca plana Clinical Differential Diagnosis Lentigo Verruca plana Congenital nevus Epidermal nevus Histopathology A shave biopsy showed slight acanthosis with koilocytic (perinuclear halo clearing) changes in the upper…
Figure 3.1 Lichen Planus Clinical Differential Diagnosis Drug eruption Lichen Planus secondary to Hepatitis C infection Psoriasis Tinea Contact dermatitis Histopathology Sections showed a band-like infiltrate of lymphocytes along the…
