Solitary eccrine syringofibroadenoma--Case Report

Abstract

Eccrine syringofibroadenoma is a rare benign adnexal neoplasm derived from cells of the acrosyringium of eccrine sweat glands. ESFA usually manifests as a solitary nodule on the extremities of elderly patients, but it may also present as papules, nodules or plaques. Its clinical appearance is nonspecific and malignant neoplasms should be considered in the differential diagnosis. However, histopathological findings are typical. The main treatment is surgical excision. In order to illustrate a typical presentation of the tumor, we report a case of solitary eccrine syringofibroadenoma, including the surgical treatment used and its result.

FIGURE 1

Erythematous tumor with a small central ulceration on the right lateral malleolus

FIGURE 2

Tumor in greater detail, showing its granular surface and ill-defined edges.

FIGURE 3

Histopathology showing epidermis-derived, intertwined epithelial cords, ending in thin projections. Some of these projections have a typical 'crab claw' appearance (arrow). Between the cords, a rich fibrovascular stroma was present. (HE, 40x)

FIGURE 4

Light formations of the eccrine ducts were identified within some of the cords (arrows). (HE, 200x)

FIGURE 5

A) schematic drawing of the reverse-flow supramalleolar flap, B) the making of the flap according to the surgical plan, C) rotation of the flap for coverage of the surgical wound, D) partial skin graft coverage of the flap donor site

FIGURE 6

result observed three months postoperatively