Topical Sirolimus for Refractory Cutis Marmorata Telangiectatica Congenita in Adulthood: A Case Report

September 2026 | Volume 25 | Issue 9 | 9757 | Copyright © September 2026


Published online August 17, 2026

Ram D. Bhatt a, Kateryna Karpoff BSb, Nicholas Heitman MD PhDb, Rabail Aslam MDb, Mark Lebwohl MDb

aFordham University, Bronx, NY
bThe Kimberly and Eric J. Waldman Department of Dermatology, Icahn School of Medicine at Mount Sinai Hospital, New York, NY

Abstract
Cutis marmorata telangiectatica congenita (CMTC) is a rare congenital vascular disorder characterized by persistent, violaceous, reticulated skin changes that may be complicated by painful ulcerations. Although localized disease often improves with age, generalized CMTC can persist into adulthood and may be associated with limb asymmetry, ocular abnormalities, and neurologic sequelae. Diagnosis can be challenging in atypical adult presentations despite established major and minor criteria. We report a case of a 50-year-old woman with congenital livedo reticularis and Raynaud syndrome who presented with lifelong unilateral left lower-extremity hypoplasia and fixed lacy violaceous patches. Over the preceding decade, she developed recurrent, spontaneous, painful ulcerations exacerbated by cold exposure. Examination revealed a hypoplastic left leg with reticulated violaceous patches and tender, crusted erosions without venectasia; biopsy findings ruled out vasculitis, and the overall clinicopathologic picture met all three major and multiple minor Kienast-Hoeger criteria for CMTC. Multiple therapies targeting vasospasm and microvascular flow (including sildenafil, pentoxifylline, diosmiplex, nifedipine, and aspirin) failed to improve symptoms. Initiation of once-daily topical sirolimus (1 mg/mL) resulted in marked pain reduction within four weeks and cessation of new ulcerations, with visible improvement and healed erosions by two months. This case supports topical sirolimus as a promising off-label option for adult CMTC with chronic ulcerative disease.

INTRODUCTION

Cutis marmorata telangiectatica congenita (CMTC) is a rare congenital vascular disorder characterized by violaceous, reticulated skin that may be complicated by painful ulcerations. Limited presentations often improve but rarely fully resolve with age, whereas generalized CMTC may persist into adulthood and is associated with limb asymmetry, glaucoma, and neurological deficits.1 Kienast and Hoeger proposed widely accepted major and minor diagnostic criteria, yet diagnosis remains challenging with untraditional presentations and when symptoms progress beyond childhood.2 Treatment is largely conservative, focused on avoiding cold exposure and trauma; therapies for extensive disease are limited to vasodilators, aspirin, and laser therapies. We present an unusual case of unilateral limb hypoplasia with vascular malformation, Raynaud syndrome, and livedo reticularis in an adult, ultimately diagnosed as CMTC and successfully treated with topical sirolimus.

A 50-year-old female with a history of congenital livedo reticularis and Raynaud syndrome presented with painful, violaceous, lacy patches on her left leg with associated limb hypoplasia present since birth. The erythema did not fade with warming, and she reported a 10-year history of spontaneous painful ulcerations of the affected leg that flared during cold weather. She denied a family history of similar presentations. She previously tried topical lidocaine for pain relief, but ultimately developed new erosions at application sites. Physical examination revealed a hypoplastic left leg from the upper thigh to the foot with lace-like violaceous patches and tender crusted erosions, without venectasia (Figure 1A-C). A skin biopsy was obtained from a crusted lesion on the thigh.