Magnetic Resonance Imaging Characteristics of Poroma and Porocarcinoma

J Comput Assist Tomogr. 2021 May-Jun;45(3):447-451. doi: 10.1097/RCT.0000000000001146.


Purpose: The purpose of this study was to evaluate magnetic resonance (MR) imaging findings of poroma and porocarcinoma.

Methods: Six patients (3 male, 3 female; age range, 40-84 years; mean age, 61 years) with histologically confirmed skin appendage tumors with apocrine and eccrine differentiation (2 poromas and 4 porocarcinomas) were enrolled. All patients underwent preoperative MR imaging and the MR images were retrospectively reviewed.

Results: The configurations were classified as pedunculated solid in 5 lesions and subcutaneous cystic with mural nodules in 1. Well-demarcated deep tumor margins and smooth skin surfaces were observed in all 6 lesions, and peritumoral fat stranding was observed in 2. In all 5 pedunculated solid lesions, T2-hyperintense foci, T1 hyperintensity, and homogeneous solid components were observed within the lesions.

Conclusions: Poroma and porocarcinoma usually exhibited pedunculated solid homogeneous lesion. Intratumoral T2-hyperintense foci and T1 hyperintensity were observed in pedunculated solid lesions.

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Diagnosis, Differential
  • Eccrine Porocarcinoma / diagnostic imaging*
  • Eccrine Porocarcinoma / pathology
  • Female
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Middle Aged
  • Poroma / diagnostic imaging*
  • Poroma / pathology
  • Retrospective Studies
  • Sweat Gland Neoplasms / diagnostic imaging*
  • Sweat Gland Neoplasms / pathology