case_images: PMC5379080_01
case_images: Preoperation picture.
case_images: CRIDM2017-9761843.001.jpg
case_images: PMC5379080_01_CRIDM2017-9761843.001.jpg
case_images: fig1
case_images: Umbilicus was normal looking (Figure 1).
case_images: Polypoid lesion protruded to umbilicus covered by acanthotic epidermis.
case_images: CRIDM2017-9761843.002.jpg
case_images: PMC5379080_01_CRIDM2017-9761843.002.jpg
case_images: fig2
case_images: However, a deep-seated nodule was found in the umbilicus with the clinical impression of "umbilical sinus." He underwent surgery and excisional biopsy; histopathologic examination revealed a polypoid lesion protruded to umbilicus covered by acanthotic epidermis (Figure 2) with a prominent increase in eccrine coils and dermal fibrosis (Figure 3).
case_images: Prominent increase in eccrine coils and dermal fibrosis.
case_images: CRIDM2017-9761843.003.jpg
case_images: PMC5379080_01_CRIDM2017-9761843.003.jpg
case_images: fig3
case_images: However, a deep-seated nodule was found in the umbilicus with the clinical impression of "umbilical sinus." He underwent surgery and excisional biopsy; histopathologic examination revealed a polypoid lesion protruded to umbilicus covered by acanthotic epidermis (Figure 2) with a prominent increase in eccrine coils and dermal fibrosis (Figure 3).