Morbihan syndrome is a rare entity that more commonly affects women in the third
or fourth decade of life. It is considered a special form of rosacea and its
pathogenesis is not fully known. It is clinically characterized by the slow
appearance of erythema and solid edemas on the upper portion of the face, with
accentuation in the periorbital region, forehead, glabella, nose, and cheeks. We
report the case of a patient presented with edema on the upper eyelid for a
year. These findings suggested the diagnosis of Morbihan syndrome. We aim to
report a rare, particularly refractory and chronic form of rosacea, which has
received little attention in the literature.
Tumor of the follicular infundibulum is a rare benign cutaneous adnexal neoplasm with
variable clinical presentation. In most cases the diagnosis is made with the help of
histopathology, due to lack of a characteristic clinical presentation. The most
common form is a solitary lesion, but it can be multiple or eruptive, then called
infundibulomatose. This case report illustrates a patient with multiple lesions of
tumor of the follicular infundibulum with bizarre aspect and atypical location.
Plasmoacanthoma is an extremely rare verrucous tumor located on periorificial
regions characterized by dense dermal plasmacytic infiltrates. Some authors
classify it as a form of reactive plasma cell proliferation which represents a
heterogeneous spectrum of mucocutaneous disorders. These plasma cell
proliferations have been considered to be a benign immunologic inflammatory
reaction to known or unknown stimuli. However, the etiology of plasmoacanthoma
remains highly speculative. We report the case of a 40-year-old woman who
presented with a lobulated warty lesion affecting the lower lip. Biopsy from the
lesion was compatible with plasmoacanthoma, which remains an underreported
disease in the dermatology literature.
Lichen simplex chronicus is a skin disease that mostly affects female patients,
with a peak incidence between ages 35 and 50 years. On the scalp, it appears as
a single or multiple oval lesions, showing scaling and hair shaft loss or
breakage. An important dermoscopic feature of the disease are the "broom
fibers." Histopathology reveals the "hamburger" and the "gear wheel" signs. The
aim of this report is to demonstrate a case of lichen simplex chronicus on the
scalp with typical and exuberant clinical, dermoscopic, and histopathological
findings.
Lupus tumidus is considered a rare subtype of chronic cutaneous lupus
erythematosus, characterized by erythema and bright urticarial
erythematous-violaceous lesions that leave no scars after regression.
Histopathology reveals perivascular and periannexal lymphohistiocytic
infiltrates in the papillary and reticular dermis and interstitial mucin
deposition. Treatment is based on photoprotection, topical corticosteroids and
antimalarials. We report two cases of lupus tumidus, which deserve attention for
their low frequency in the literature, in addition to their relevance as a
differential diagnosis among dermatologic disorders.
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