Monkeypox: A Histopathological and Transmission Electron Microscopy Study.

The global outbreak of human monkeypox virus (hMPXV1) in 2022 highlighted the usefulness of dermatological manifestations for its diagnosis. Infection by the human monkeypox virus thus necessitated inclusion in the diagnostic repertoire of dermatopathology. To assess the histopathological and microscopical findings of cutaneous lesions related to hMPXV infection, we analyzed skin biopsies from patients with positive MPXV DNA polymerase chain reaction presenting with a typical course of hMPXV1 infection.

Circumscribed Morphea of the Scalp: An Entity to Be Considered in the Differential Diagnosis of Cicatricial Alopecia.

Introduction: Morphea, also known as localized scleroderma, could affect the head and neck region, mainly manifesting in a linear pattern. Localized scleroderma of the scalp presenting as a circumscribed alopecic patch has been described as an unusual clinical entity. We present a new case of circumscribed morphea of the scalp.

Disseminated superficial actinic porokeratosis following hydroxyurea treatment: A case report.

Porokeratosis encompass a group of acquired and familial, preneoplastic, keratinization disorders, clinically characterized by atrophic macules or patches with a peripheral keratotic rim, the cornoid lamella. Genetic background is recognized as crucial in its pathophysiology, while immunosuppression and ultraviolet radiation represent triggering factors. We report the case of a woman who developed disseminate superficial actinic porokeratosis following the intake of hydroxyurea for a polycythaemia vera.

Juvenile gangrenous vasculitis of the scrotum: Is it a variant of pyoderma gangrenosum?

Juvenile gangrenous vasculitis of the scrotum was described by Piñol et al in 1974 as a unique variant of scrotal gangrene of unknown origin, occurring exclusively in young individuals. It was characterized by an acute onset of skin ulcers undergoing complete resolution after appropriate therapy, with no relapses. We present a typical case of this extremely rare disease affecting a 16-year-old boy in whom the scrotal ulcerations were preceded by an episode of pharyngitis with fever.