[Peri-navel intestinal patch-like choristia (author's transl)]

Area of Science:

• Dermatology
• Gastroenterology
• Histopathology

Background:

• Umbilical anomalies can present with diverse clinical and histological features.
• Choristia, the presence of histologically normal tissue in an abnormal location, is a rare finding.

Observation:

• A unique umbilical anomaly characterized by erythematous, crusted plaques extending beyond the navel was observed.
• Histological examination revealed the anomaly to be an intestinal choristia within the epidermis.
• Ultrastructural analysis focused on the interaction between ectopic intestinal cells and epidermal keratinocytes.

Findings:

• The study identified ectopic intestinal tissue within the umbilical epidermis, classified as choristia.
• Ultrastructural examination provided insights into the relationship between intestinal cells and keratinocytes at the cellular level.
• Analogies in cellular behavior were proposed between ectopic intestinal cells and Paget's cells.

Implications:

• This case expands the understanding of rare umbilical anomalies and choristia.
• The findings may contribute to differentiating similar dermatological conditions.
• Further research into the behavior of ectopic tissues could offer new diagnostic or therapeutic avenues.