Disseminated spiked hyperkeratosis

Multiple minute digitate hyperkeratosis: 10 years from Caccetta's algorithm. A case report and narrative review

To date, the clinical appearance and histological features of multiple minute digitate hyperkeratosis have been well characterized. However, there is no consensus on its treatment. After a comprehensive search of the databases MEDLINE, EMBASE, Web of Science, and the Cochrane Library and Database of Systematic Reviews, we have summarized the available clinical evidence regarding the therapeutic approaches already reported for this entity since its first description in 1967. Additional publications were identified within the references of retrieved papers. Sixty-five articles have been revised, resulting in a total of 73 compatible cases. The histopathological features and different classifications used through history have also been considered, updating and completing the available knowledge. Ultimately, we propose topical treatment with 5 % 5-fluorouracil formulated with 10 % salicylic acid as a potential treatment that has been used successfully in a 51-year-old woman at our facility. Further research in form of prospective or comparative studies is encouraged for a better conceptualization of the therapeutics of this disease.

Multiple Minute Digitate Hyperkeratosis: 10 Jahre nach Caccettas Algorithmus. Fallbericht und narrative Übersicht

Das klinische Erscheinungsbild und die histologischen Merkmale der Multiple Minute Digitate Hyperkeratosis sind bereits gut charakterisiert. Es besteht jedoch kein Konsens über die Behandlung dieser Erkrankung. Nach einer umfassenden Recherche in den Datenbanken MEDLINE, EMBASE, Web of Science und der Cochrane Library and Database of Systematic Reviews haben wir die vorliegenden klinischen Daten zu den therapeutischen Ansätzen zusammengefasst, die für diese Entität seit ihrer Erstbeschreibung im Jahr 1967 publiziert wurden. Zusätzliche Veröffentlichungen wurden in den Referenzen der gefundenen Artikel identifiziert. Fünfundsechzig Artikel wurden durchgesehen, sodass sich insgesamt 73 kompatible Fälle ergaben. Die histopathologischen Merkmale und die verschiedenen Klassifizierungen, die im Laufe der Zeit verwendet wurden, wurden ebenfalls berücksichtigt. Letztendlich schlagen wir die topische Behandlung mit 5% 5‐Fluorouracil in Kombination mit 10% Salicylsäure als eine mögliche Behandlung vor, die bei einer 51‐jährigen Frau in unserer Einrichtung erfolgreich angewendet wurde. Weitere Forschung in Form von prospektiven oder vergleichenden Studien werden empfohlen, um ein besseres Konzept für die Therapie dieser Krankheit zu entwickeln.

Postirradiation Multiple Minute Digitate Porokeratosis

Background:

Development of multiple minute digitate hyperkeratoses (MMDH) after irradiation has been reported previously. The keratotic lesions in these cases were confined within the irradiation field, and histopathological examination disclosed a focal column of parakeratosis (cornoid lamella) arising from an epidermis devoid of granular layer.

Objective:

We describe a 78-year-old woman who developed multiple, discrete, tiny, filiform, keratotic papules on the anterior aspect of the right chest wall, 13 months after postmastectomy cobalt irradiation therapy for mammary infiltrating ductal carcinoma.

Conclusion:

Postirradiation MMDH represents a peculiar radiation-induced disorder that we believe should be distinguished from other cases of MMDH and included within the spectrum of porokeratosis.

Postirradiation multiple minute digitate porokeratosis

BACKGROUND

Development of multiple minute digitate hyperkeratoses (MMDH) after irradiation has been reported previously. The keratotic lesions in these cases were confined within the irradiation field, and histopathological examination disclosed a focal column of parakeratosis (cornoid lamella) arising from an epidermis devoid of granular layer.

OBJECTIVE

We describe a 78-year-old woman who developed multiple, discrete, tiny, filiform, keratotic papules on the anterior aspect of the right chest wall, 13 months after postmastectomy cobalt irradiation therapy for mammary infiltrating ductal carcinoma.

CONCLUSION

Postirradiation MMDH represents a peculiar radiation-induced disorder that we believe should be distinguished from other cases of MMDH and included within the spectrum of porokeratosis.

Multiple minute digitate hyperkeratoses

A familial case of multiple minute digitate hyperkeratoses is reported. Hundreds of tiny, spiked, keratotic papules were scattered on the trunk and limbs. Microscopically, the lesions showed digitiform orthohyperkeratosis with tenting of the epidermis. Neither atypical epidermal cells nor a dermal infiltrate were observed. This disease has three types: familial, sporadic and postinflammatory. We have analysed the histopathological features of all the cases reported to date. While the familial and sporadic types are similar, the lesions in the postinflammatory type are composed of parakeratotic columns with an invaginated epidermis. Although morphological analysis may not provide any clues to pathogenetic differences, it seems reasonable to assume that the postinflammatory type is an entity different from the other two forms.

Postirradiation multiple minute digitate hyperkeratoses

We report a new case of multiple minute digitate hyperkeratoses after postmastectomy irradiation therapy for mammary cancer. This is the first case of multiple minute digitate hyperkeratoses in an Asian country as well as the third report of the disorder after irradiation. The characteristic eruption, the consistent trigger of irradiation and its occurrence in patients of different racial groups indicate that multiple minute digitate hyperkeratoses are a distinct clinical entity.

Multiple minute digitate hyperkeratoses

A case of non-familial multiple digitate hyperkeratosis is reported. Digitate hyperkeratosis is a new, non-follicular disorder of keratinization and three different types have been distinguished in the literature: the familial type, with an autosomal dominant trait; the sporadic type; and the post-inflammatory type.

Multiple minute palmar-plantar digitate hyperkeratoses

Digitate hyperkeratoses are rare lesions of unknown cause. We wish to add a new variant of this entity to the few reports in the literature. Our patient is a 79-year-old woman with palmar pits and digitate hyperkeratoses limited to her palms and soles.

Transient post-inflammatory digitate keratoses

We report details of two patients who had digitate keratoses as a transient phenomenon following inflammatory skin disorders. In one patient, keratoses arose from the epidermal surface, from invaginated pits in the epidermis, and from follicles. Apart from the short duration of the lesions, the clinical and histological features were similar to previously reported cases of digitate keratoses.