Primary subcutaneous cyst hydatid: presentation of two cases

Area of Science:

• Medical Parasitology
• Dermatology
• Infectious Diseases

Background:

• Subcutaneous localization of hydatid cysts is exceptionally rare, primarily documented through case reports.
• Atypical presentations often lack evidence of other hydatid foci (e.g., liver, lungs) and yield negative serological results.

Observation:

• This study details two cases of primary subcutaneous hydatid cysts: one in the facial area and another on the back.
• Both patients, a 53-year-old female and a 37-year-old female, presented with isolated subcutaneous cysts and negative serology.
• No additional hydatid foci were detected in either case through comprehensive examination.

Findings:

• The findings suggest that subcutaneous hydatid cysts, particularly those in atypical locations, frequently present without systemic involvement.
• Serological tests for hydatid disease were negative in both presented cases and in a majority of similar literature cases.
• Analysis indicates a potentially faster growth rate for hydatid cysts than previously recognized, especially in atypical localizations.

Implications:

• The study highlights diagnostic challenges associated with subcutaneous hydatid cysts due to atypical presentation and negative serology.
• It underscores the need for further research into the etiopathogenesis of hydatid disease, particularly concerning atypical localizations.
• These findings may prompt reconsideration of diagnostic and treatment protocols for suspected subcutaneous parasitic infections.