Acquired reactive perforating collagenosis: a clinicopathologic study of 15 cases from Saudi Arabia

M B Satti1, A H Aref, A A Raddadi

  • 1Departments of Pathology, King Abdulaziz Medical City, Jeddah, Saudi Arabia. sattimb@ngha.med.sa

Abstract

Insights

Acquired reactive perforating collagenosis (ARPC) is a commonly misdiagnosed condition. This study highlights its prevalence in Saudi Arabia, often linked to diabetes mellitus and chronic renal failure.

Area of Science:

  • Dermatology
  • Pathology

Background:

  • Perforating dermatoses are characterized by transepidermal collagen elimination.
  • These conditions are often misdiagnosed despite associations with systemic diseases.

Purpose of the Study:

  • To increase clinical and pathologic diagnostic awareness of acquired reactive perforating collagenosis (ARPC).
  • To explore systemic diseases associated with ARPC.

Main Methods:

  • A retrospective clinical and pathologic review of patients seen at King Abdulaziz Medical City, Jeddah, Saudi Arabia (2002-2009).

Main Results:

  • Fifteen cases of ARPC were histologically confirmed, predominantly in adult females (mean age 54).
  • Lesions were typically pruritic, erythematous, excoriated papules/nodules on extremities, present for ~6 months.
  • Commonly associated systemic diseases included diabetes mellitus (12 patients) and chronic renal failure requiring dialysis (8 patients).

Conclusions:

  • ARPC is not uncommon in Saudi Arabia, with noduloulcerative lesions predominantly on extremities.
  • Diabetes mellitus is the most frequent associated systemic condition.
  • Increased awareness is crucial for timely recognition and appropriate therapy.

Related Concept Videos