# Squamous Metaplasia of Lactiferous Ducts (SMOLD) in a Male Patient: Clinical, Dermoscopic, and Histopathological Insights

**Authors:** Beata Zagórska, Przemysław Miłosz, Jakub Żółkiewicz, Urszula Maińska, Martyna Sławińska

PMC · DOI: 10.3390/diagnostics15192489 · Diagnostics · 2025-09-29

## TL;DR

A 44-year-old man with a burning, swollen left nipple was diagnosed with a rare condition called SMOLD through biopsy after other methods were inconclusive.

## Contribution

This case report adds a rare male instance of SMOLD to the clinical literature with detailed clinical, dermoscopic, and histopathological analysis.

## Key findings

- A biopsy confirmed squamous metaplasia of lactiferous ducts in a male patient.
- Dermoscopic findings were inconclusive, highlighting the need for histopathological confirmation.
- The patient experienced persistent symptoms despite initial empirical treatment.

## Abstract

We present the case of a 44-year-old male patient who presented to a dermatology outpatient clinic due to an asymmetric swelling of the left nipple. The patient reported a burning sensation within the area, persisting for approximately six months. Due to the inconclusive dermoscopic findings and lack of improvement following empirical treatment, a biopsy was performed. Histopathological examination revealed keratinizing squamous metaplasia of the lactiferous ducts (SMOLD).

## Full-text entities

- **Diseases:** Squamous Metaplasia of Lactiferous Ducts (MESH:C536730), swelling (MESH:D004487)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12524041/full.md

## References

11 references — full list in the complete paper: https://tomesphere.com/paper/PMC12524041/full.md

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Source: https://tomesphere.com/paper/PMC12524041