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Related Experiment Video

Updated: Jun 5, 2026

Robotic Duodenum-preserving Total Pancreatic Head Resection for Intraductal Papillary Mucinous Neoplasms

Robotic Duodenum-preserving Total Pancreatic Head Resection for Intraductal Papillary Mucinous Neoplasms

Published on: April 17, 2026

Ectopic hidradenoma papilliferum.

Aristóteles David Neiva Rosmaninho¹, Maria Teresa Duarte Pinto de Almeida, Vírgilio Costa

¹Departamento de Dermatologia, Centro Hospitalar do Porto, HSA, Edifício das Consultas Externas, Ex-CICAP, Rua D. Manuel II, 4099-001 Porto, Portugal.

Dermatology Research and Practice

|January 4, 2011

Summary

Hidradenoma papilliferum, a rare skin tumor typically found in women, can exceptionally occur in men on the eyelid. This case highlights a rare ectopic presentation of hidradenoma papilliferum in an unusual location.

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Last Updated: Jun 5, 2026

Robotic Duodenum-preserving Total Pancreatic Head Resection for Intraductal Papillary Mucinous Neoplasms

Robotic Duodenum-preserving Total Pancreatic Head Resection for Intraductal Papillary Mucinous Neoplasms

Published on: April 17, 2026

Area of Science:

Dermatopathology
Oncology

Background:

Hidradenoma papilliferum is a rare benign adnexal tumor.
It predominantly affects the anogenital region of females.

Observation:

A 26-year-old male presented with a slow-growing nodule on his right eyelid.
The lesion was asymptomatic, firm, mobile, and well-demarcated.

Findings:

Histopathological examination confirmed the diagnosis of hidradenoma papilliferum.
This represents a rare ectopic (nongenital) occurrence of the tumor.
Eyelid localization is exceptionally infrequent among reported ectopic cases.

Implications:

This case expands the known clinical spectrum of hidradenoma papilliferum.
It underscores the importance of considering rare diagnoses in atypical locations.
Further research may elucidate the pathogenesis of ectopic hidradenoma papilliferum.