Eccrine hidrocystomas: A distinct clinicopathologic entity and a potential mimicker of malignancy—A case series with a review of the literature

Eccrine hidrocystomas are a rare, benign cystic lesion of the skin primarily found in the head and neck region, with a predilection for the periorbital area in adult females. These cysts typically present as small, tense, thin-walled structures ranging from 1 to 6 mm in size, occurring either as solitary entities or in multiples. Despite their benign nature, eccrine hidrocystomas pose diagnostic challenges due to their resemblance to malignant lesions both clinically and in imaging studies. This study aims to explore the varied clinical presentations of eccrine hidrocystoma and discuss the complexities associated with its diagnosis. Five cases were included in the study along with a comprehensive review of the existing literature. We emphasize the importance of accurate and early diagnosis for appropriate management. The clinical manifestations of eccrine hidrocystoma often overlap with features suggestive of malignancy, underscoring the necessity for meticulous histopathological examination to definitively differentiate between these entities. This differentiation is crucial as it impacts treatment decisions and patient outcomes. In conclusion, our study underscores the diagnostic dilemmas posed by eccrine hidrocystoma, highlights its potential mimicry of malignancy, and emphasizes the significance of histopathological evaluation in achieving accurate diagnosis and guiding management strategies.