Figure 18.1 Syphilis, left lower arm Figure 18.2 Syphilis, small dark, vesicular lesions on the median of the patient’s left leg Figure 18.3 Syphilis, hyperpigmented patches found throughout the lower…
Figure 27.1 H&E 100×, Coccidiodomycosis, inflammation with scattered multinucleated giant cells Coccidioidomycosis does not affect all ethnicities equally. Those of African, Filipino, Mexican or Native American heritage are more likely…
Figure 23.1 Tinea corporis (one hand, two feet sign), the palm of the hand and both the bottom of the feet are scaly Figure 23.2 Tinea corporis, multiple round/oval rash…
Figure 33.1 Head lice Clinical Differential Diagnosis Seborrheic dermatitis Insect bite Pediculosis (Lice) Eczema Psoriasis Piedra Histopathology Multiple strands of gray hair were removed and submitted for microscopic evaluation. Examination…
Figure 29.1 Candidiasis, whitish material attached to the tongue (thrush) Figure 29.2 Candidiasis, beefy red plaque at the axillae Clinical Differential Diagnosis (Skin Fold Rash) Intertrigo Tinea Psoriasis Erythrasma Seborrheic…
Figure 15.1 Mycobacterium tuberculosis Figure 15.2 H&E 40× discrete subcutaneous nodule Figure 15.3 H&E 100×, outer wall consists of lymphocytes and histiocytes while the center is necrotic Figure 15.4 H&E…
Figure 9.1 Verruca vulgaris Figure 9.2 Verruca vulgaris Clinical Differential Diagnosis Epidermal nevus Actinic keratosis Seborrheic keratosis Verruca vulgaris Histopathology The shave biopsy of the left knee was performed and…
Figure 19.1 H&E 40×, Histoplasmosis, most of the entire punch biopsy specimen contains dense inflammation Figure 19.2 H&E 100×, Histoplasmosis, confluent granulomas with scattered giant cells (arrow) Figure 19.3 H&E…
Figure 22.1 Tinea versicolor, hypopigmented round-oval flat lesions Clinical Differential Diagnosis (Pigmentation changes with minimal erythema) Vitiligo Post inflammatory hypopigmentation Idiopathic guttate hypomelanosis Tinea versicolor Histopathology Sections showed minimal inflammation…
Figure 31.1 Demodex mite. A circular lesion marked by ink dots was biopsied Clinical Differential Diagnosis Fibrous papule Basal cell carcinoma Sebaceous hyperplasia Cyst Demodex folliculitis Histopathology Sections showed a…
