Calcific uremic arteriolopathy

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Calcific uremic arteriolopathy
Author(s)
Mrinali Shetty, MD
Yuvraj Chowdhury, MD
Balaji Yegneswaran, MD, FACP

A 51-year-old man with end-stage renal disease, on peritoneal dialysis for the past 4 years, presented to the emergency department with severe pain in both legs. The pain had started 2 months previously and had progressively worsened. After multiple admissions in the past for hyperkalemia and volume overload due to noncompliance, he had been advised to switch to hemodialysis.

See related article and editorial

Figure 1. Necrotic ulcers with eschar formation surrounded by indurated plaques, accompanied by scattered flaccid bullae.
Figure 1. Necrotic ulcers with eschar formation surrounded by indurated plaques, accompanied by scattered flaccid bullae.
On examination, the skin from his toes up to his scrotum was covered with extensive tender necrotic ulcers with eschar formation surrounded by violaceous plaques and scattered flaccid bullae (Figure 1). His peripheral pulses were intact.

Laboratory analysis revealed the following values:

  • Serum creatinine 12.62 mg/dL (reference range 0.73–1.22)
  • Blood urea nitrogen 159 mg/dL (9–24)
  • Serum calcium corrected for serum albumin 8.1 mg/dL (8.4–10.0)
  • Serum phosphorus 10.6 mg/dL (2.7–4.8).

His history of end-stage renal disease, failure of peritoneal dialysis, high calcium-phosphorus product (8.1 mg/dL × 10.6 mg/dL = 85.9 mg2/dL 2, reference range ≤ 55), and characteristic physical findings led to the diagnosis of calcific uremic arteriolopathy.

CALCIFIC UREMIC ARTERIOLOPATHY

Calcific uremic arteriolopathy or “calciphylaxis,” seen most often in patients with end-stage renal disease, is caused by calcium deposition in the media of the dermo-hypodermic arterioles, leading to infarction of adjacent tissue.1–3 A high calcium-phosphorus product (> 55) has been implicated in its development; however, the calcium-phosphorus product can be normal despite hyperphosphatemia, which itself may promote ectopic calcification.

Early ischemic manifestations include livedo reticularis and painful retiform purpura on the thighs and other areas of high adiposity. Lesions evolve into violaceous plaquelike subcutaneous nodules that can infarct, become necrotic, ulcerate, and become infected. Punch biopsy demonstrating arteriolar calcification, subintimal fibrosis, and thrombosis confirms the diagnosis.

Differential diagnosis

Warfarin necrosis can cause large, irregular, bloody bullae that ulcerate and turn into eschar that may resemble lesions of calcific uremic arteriolopathy. Our patient, however, had no exposure to warfarin.

Pemphigus foliaceus, an immunoglobulin G4-mediated autoimmune disorder targeted against desmoglein-1, leads to the formation of fragile blisters that easily rupture when rubbed (Nikolsky sign). Lesions evolve into scaling, crusty erosions on an erythematous base. With tender blisters and lack of mucous membrane involvement, pemphigus foliaceus shares similarities with calcific uremic arteriolopathy, but the presence of necrotic eschar surrounded by violaceous plaques in our patient made it an unlikely diagnosis.

Cryofibrinogenemia. In the right clinical scenario, ie, in a patient with vasculitis, malignancy, infection, cryoglobulinemia, or collagen diseases, cryofibrinogen-mediated cold-induced occlusive lesions may mimic calcific uremic arteriolopathy, with painful or pruritic erythema, purpura, livedo reticularis, necrosis, and ulceration.4 Our patient had no color changes with exposure to cold, nor any history of Raynaud phenomenon or joint pain, making the diagnosis of cryofibrinogenemia less likely.

Nephrogenic systemic fibrosis. Gadolinium contrast medium in magnetic resonance imaging can cause nephrogenic systemic fibrosis, characterized by erythematous papules that coalesce into brawny plaques with surrounding woody induration, which may resemble lesions of calcific uremic arteriolopathy.5 However, our patient had not been exposed to gadolinium.

Management

Management is multidisciplinary and includes the following1:

  • Hemodialysis, modified to optimize calcium balance2
  • Intravenous sodium thiosulfate: the exact mechanism of action remains unclear, but it is thought to play a role in chelating calcium from tissue deposits, thus decreasing pain and promoting regression of skin lesions3
  • Wound care, including chemical debridement agents, negative-pressure wound therapy, and surgical debridement for infected wounds6
  • Pain management with opioid analgesics.

The patient was treated with all these measures. However, he died of sudden cardiac arrest during the same admission.

References
  1. Weenig RH, Sewell LD, Davis MD, McCarthy JT, Pittelkow MR. Calciphylaxis: natural history, risk factor analysis, and outcome. J Am Acad Dermatol 2007; 56(4):569–579. doi:10.1016/j.jaad.2006.08.065
  2. Nigwekar SU, Kroshinsky D, Nazarian RM, et al. Calciphylaxis: risk factors, diagnosis, and treatment. Am J Kidney Dis 2015; 66(1):133–146. doi:10.1053/j.ajkd.2015.01.034
  3. Janigan DT, Hirsch DJ, Klassen GA, MacDonald AS. Calcified subcutaneous arterioles with infarcts of the subcutis and skin (“calciphylaxis”) in chronic renal failure. Am J Kidney Dis 2000; 35(4):588–597. pmid:10739777
  4. Michaud M, Pourrat J. Cryofibrinogenemia. J Clin Rheumatol 2013; 19(3):142–148. doi:10.1097/RHU.0b013e318289e06e
  5. Galan A, Cowper SE, Bucala R. Nephrogenic systemic fibrosis (nephrogenic fibrosing dermopathy). Curr Opin Rheumatol 2006; 18(6):614–617. doi:10.1097/01.bor.0000245725.94887.8d
  6. Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith LA, Katz SI, eds. Fitzpatrick’s Dermatology in General Medicine. 6th ed. New York, NY: McGraw-Hill Professional; 2003:558–562.
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Mrinali Shetty, MD
Chief Resident, Department of Internal Medicine, Saint Peter’s University Hospital, New Brunswick, NJ

Yuvraj Chowdhury, MD
Chief Resident, Department of Internal Medicine, Saint Peter’s University Hospital, New Brunswick, NJ

Balaji Yegneswaran, MD, FACP
Associate Program Director, Department of Internal Medicine, Saint Peter’s University Hospital,
New Brunswick, NJ

Address: Mrinali Shetty, MD, Department of Internal Medicine, Saint Peter’s University Hospital, 254 Easton Avenue, New Brunswick, NJ 08901; mshetty@saintpetersuh.com

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Cleveland Clinic Journal of Medicine - 85(8)
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Cleveland Clinic Journal of Medicine
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Dermatology
Nephrology
Emergency Medicine
Hospital Medicine
Page Number
584-585
Legacy Keywords
calcific uremic arteriolopathy, calciphylaxis, end-stage renal disease, ESRD, leg ulcers, calcium, phosphorus, necrosis, warfarin, pemphigus, cryofibrinogenemia, Mrinali Shetty, Yuvraj Chowdhury, Balaji Yegneswaran
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Author(s)
Mrinali Shetty, MD
Yuvraj Chowdhury, MD
Balaji Yegneswaran, MD, FACP
Author(s)
Mrinali Shetty, MD
Yuvraj Chowdhury, MD
Balaji Yegneswaran, MD, FACP
Author and Disclosure Information

Mrinali Shetty, MD
Chief Resident, Department of Internal Medicine, Saint Peter’s University Hospital, New Brunswick, NJ

Yuvraj Chowdhury, MD
Chief Resident, Department of Internal Medicine, Saint Peter’s University Hospital, New Brunswick, NJ

Balaji Yegneswaran, MD, FACP
Associate Program Director, Department of Internal Medicine, Saint Peter’s University Hospital,
New Brunswick, NJ

Address: Mrinali Shetty, MD, Department of Internal Medicine, Saint Peter’s University Hospital, 254 Easton Avenue, New Brunswick, NJ 08901; mshetty@saintpetersuh.com

Author and Disclosure Information

Mrinali Shetty, MD
Chief Resident, Department of Internal Medicine, Saint Peter’s University Hospital, New Brunswick, NJ

Yuvraj Chowdhury, MD
Chief Resident, Department of Internal Medicine, Saint Peter’s University Hospital, New Brunswick, NJ

Balaji Yegneswaran, MD, FACP
Associate Program Director, Department of Internal Medicine, Saint Peter’s University Hospital,
New Brunswick, NJ

Address: Mrinali Shetty, MD, Department of Internal Medicine, Saint Peter’s University Hospital, 254 Easton Avenue, New Brunswick, NJ 08901; mshetty@saintpetersuh.com

Article PDF
shetty_uremicarteriolopathy.pdf
Article PDF
shetty_uremicarteriolopathy.pdf
Related Articles
Phosphorus binders: The new and the old, and how to choose
Phosphorus in kidney disease: Culprit or bystander?
Necrotic skin lesions after hemodialysis

A 51-year-old man with end-stage renal disease, on peritoneal dialysis for the past 4 years, presented to the emergency department with severe pain in both legs. The pain had started 2 months previously and had progressively worsened. After multiple admissions in the past for hyperkalemia and volume overload due to noncompliance, he had been advised to switch to hemodialysis.

See related article and editorial

Figure 1. Necrotic ulcers with eschar formation surrounded by indurated plaques, accompanied by scattered flaccid bullae.
Figure 1. Necrotic ulcers with eschar formation surrounded by indurated plaques, accompanied by scattered flaccid bullae.
On examination, the skin from his toes up to his scrotum was covered with extensive tender necrotic ulcers with eschar formation surrounded by violaceous plaques and scattered flaccid bullae (Figure 1). His peripheral pulses were intact.

Laboratory analysis revealed the following values:

  • Serum creatinine 12.62 mg/dL (reference range 0.73–1.22)
  • Blood urea nitrogen 159 mg/dL (9–24)
  • Serum calcium corrected for serum albumin 8.1 mg/dL (8.4–10.0)
  • Serum phosphorus 10.6 mg/dL (2.7–4.8).

His history of end-stage renal disease, failure of peritoneal dialysis, high calcium-phosphorus product (8.1 mg/dL × 10.6 mg/dL = 85.9 mg2/dL 2, reference range ≤ 55), and characteristic physical findings led to the diagnosis of calcific uremic arteriolopathy.

CALCIFIC UREMIC ARTERIOLOPATHY

Calcific uremic arteriolopathy or “calciphylaxis,” seen most often in patients with end-stage renal disease, is caused by calcium deposition in the media of the dermo-hypodermic arterioles, leading to infarction of adjacent tissue.1–3 A high calcium-phosphorus product (> 55) has been implicated in its development; however, the calcium-phosphorus product can be normal despite hyperphosphatemia, which itself may promote ectopic calcification.

Early ischemic manifestations include livedo reticularis and painful retiform purpura on the thighs and other areas of high adiposity. Lesions evolve into violaceous plaquelike subcutaneous nodules that can infarct, become necrotic, ulcerate, and become infected. Punch biopsy demonstrating arteriolar calcification, subintimal fibrosis, and thrombosis confirms the diagnosis.

Differential diagnosis

Warfarin necrosis can cause large, irregular, bloody bullae that ulcerate and turn into eschar that may resemble lesions of calcific uremic arteriolopathy. Our patient, however, had no exposure to warfarin.

Pemphigus foliaceus, an immunoglobulin G4-mediated autoimmune disorder targeted against desmoglein-1, leads to the formation of fragile blisters that easily rupture when rubbed (Nikolsky sign). Lesions evolve into scaling, crusty erosions on an erythematous base. With tender blisters and lack of mucous membrane involvement, pemphigus foliaceus shares similarities with calcific uremic arteriolopathy, but the presence of necrotic eschar surrounded by violaceous plaques in our patient made it an unlikely diagnosis.

Cryofibrinogenemia. In the right clinical scenario, ie, in a patient with vasculitis, malignancy, infection, cryoglobulinemia, or collagen diseases, cryofibrinogen-mediated cold-induced occlusive lesions may mimic calcific uremic arteriolopathy, with painful or pruritic erythema, purpura, livedo reticularis, necrosis, and ulceration.4 Our patient had no color changes with exposure to cold, nor any history of Raynaud phenomenon or joint pain, making the diagnosis of cryofibrinogenemia less likely.

Nephrogenic systemic fibrosis. Gadolinium contrast medium in magnetic resonance imaging can cause nephrogenic systemic fibrosis, characterized by erythematous papules that coalesce into brawny plaques with surrounding woody induration, which may resemble lesions of calcific uremic arteriolopathy.5 However, our patient had not been exposed to gadolinium.

Management

Management is multidisciplinary and includes the following1:

  • Hemodialysis, modified to optimize calcium balance2
  • Intravenous sodium thiosulfate: the exact mechanism of action remains unclear, but it is thought to play a role in chelating calcium from tissue deposits, thus decreasing pain and promoting regression of skin lesions3
  • Wound care, including chemical debridement agents, negative-pressure wound therapy, and surgical debridement for infected wounds6
  • Pain management with opioid analgesics.

The patient was treated with all these measures. However, he died of sudden cardiac arrest during the same admission.

A 51-year-old man with end-stage renal disease, on peritoneal dialysis for the past 4 years, presented to the emergency department with severe pain in both legs. The pain had started 2 months previously and had progressively worsened. After multiple admissions in the past for hyperkalemia and volume overload due to noncompliance, he had been advised to switch to hemodialysis.

See related article and editorial

Figure 1. Necrotic ulcers with eschar formation surrounded by indurated plaques, accompanied by scattered flaccid bullae.
Figure 1. Necrotic ulcers with eschar formation surrounded by indurated plaques, accompanied by scattered flaccid bullae.
On examination, the skin from his toes up to his scrotum was covered with extensive tender necrotic ulcers with eschar formation surrounded by violaceous plaques and scattered flaccid bullae (Figure 1). His peripheral pulses were intact.

Laboratory analysis revealed the following values:

  • Serum creatinine 12.62 mg/dL (reference range 0.73–1.22)
  • Blood urea nitrogen 159 mg/dL (9–24)
  • Serum calcium corrected for serum albumin 8.1 mg/dL (8.4–10.0)
  • Serum phosphorus 10.6 mg/dL (2.7–4.8).

His history of end-stage renal disease, failure of peritoneal dialysis, high calcium-phosphorus product (8.1 mg/dL × 10.6 mg/dL = 85.9 mg2/dL 2, reference range ≤ 55), and characteristic physical findings led to the diagnosis of calcific uremic arteriolopathy.

CALCIFIC UREMIC ARTERIOLOPATHY

Calcific uremic arteriolopathy or “calciphylaxis,” seen most often in patients with end-stage renal disease, is caused by calcium deposition in the media of the dermo-hypodermic arterioles, leading to infarction of adjacent tissue.1–3 A high calcium-phosphorus product (> 55) has been implicated in its development; however, the calcium-phosphorus product can be normal despite hyperphosphatemia, which itself may promote ectopic calcification.

Early ischemic manifestations include livedo reticularis and painful retiform purpura on the thighs and other areas of high adiposity. Lesions evolve into violaceous plaquelike subcutaneous nodules that can infarct, become necrotic, ulcerate, and become infected. Punch biopsy demonstrating arteriolar calcification, subintimal fibrosis, and thrombosis confirms the diagnosis.

Differential diagnosis

Warfarin necrosis can cause large, irregular, bloody bullae that ulcerate and turn into eschar that may resemble lesions of calcific uremic arteriolopathy. Our patient, however, had no exposure to warfarin.

Pemphigus foliaceus, an immunoglobulin G4-mediated autoimmune disorder targeted against desmoglein-1, leads to the formation of fragile blisters that easily rupture when rubbed (Nikolsky sign). Lesions evolve into scaling, crusty erosions on an erythematous base. With tender blisters and lack of mucous membrane involvement, pemphigus foliaceus shares similarities with calcific uremic arteriolopathy, but the presence of necrotic eschar surrounded by violaceous plaques in our patient made it an unlikely diagnosis.

Cryofibrinogenemia. In the right clinical scenario, ie, in a patient with vasculitis, malignancy, infection, cryoglobulinemia, or collagen diseases, cryofibrinogen-mediated cold-induced occlusive lesions may mimic calcific uremic arteriolopathy, with painful or pruritic erythema, purpura, livedo reticularis, necrosis, and ulceration.4 Our patient had no color changes with exposure to cold, nor any history of Raynaud phenomenon or joint pain, making the diagnosis of cryofibrinogenemia less likely.

Nephrogenic systemic fibrosis. Gadolinium contrast medium in magnetic resonance imaging can cause nephrogenic systemic fibrosis, characterized by erythematous papules that coalesce into brawny plaques with surrounding woody induration, which may resemble lesions of calcific uremic arteriolopathy.5 However, our patient had not been exposed to gadolinium.

Management

Management is multidisciplinary and includes the following1:

  • Hemodialysis, modified to optimize calcium balance2
  • Intravenous sodium thiosulfate: the exact mechanism of action remains unclear, but it is thought to play a role in chelating calcium from tissue deposits, thus decreasing pain and promoting regression of skin lesions3
  • Wound care, including chemical debridement agents, negative-pressure wound therapy, and surgical debridement for infected wounds6
  • Pain management with opioid analgesics.

The patient was treated with all these measures. However, he died of sudden cardiac arrest during the same admission.

References
  1. Weenig RH, Sewell LD, Davis MD, McCarthy JT, Pittelkow MR. Calciphylaxis: natural history, risk factor analysis, and outcome. J Am Acad Dermatol 2007; 56(4):569–579. doi:10.1016/j.jaad.2006.08.065
  2. Nigwekar SU, Kroshinsky D, Nazarian RM, et al. Calciphylaxis: risk factors, diagnosis, and treatment. Am J Kidney Dis 2015; 66(1):133–146. doi:10.1053/j.ajkd.2015.01.034
  3. Janigan DT, Hirsch DJ, Klassen GA, MacDonald AS. Calcified subcutaneous arterioles with infarcts of the subcutis and skin (“calciphylaxis”) in chronic renal failure. Am J Kidney Dis 2000; 35(4):588–597. pmid:10739777
  4. Michaud M, Pourrat J. Cryofibrinogenemia. J Clin Rheumatol 2013; 19(3):142–148. doi:10.1097/RHU.0b013e318289e06e
  5. Galan A, Cowper SE, Bucala R. Nephrogenic systemic fibrosis (nephrogenic fibrosing dermopathy). Curr Opin Rheumatol 2006; 18(6):614–617. doi:10.1097/01.bor.0000245725.94887.8d
  6. Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith LA, Katz SI, eds. Fitzpatrick’s Dermatology in General Medicine. 6th ed. New York, NY: McGraw-Hill Professional; 2003:558–562.
References
  1. Weenig RH, Sewell LD, Davis MD, McCarthy JT, Pittelkow MR. Calciphylaxis: natural history, risk factor analysis, and outcome. J Am Acad Dermatol 2007; 56(4):569–579. doi:10.1016/j.jaad.2006.08.065
  2. Nigwekar SU, Kroshinsky D, Nazarian RM, et al. Calciphylaxis: risk factors, diagnosis, and treatment. Am J Kidney Dis 2015; 66(1):133–146. doi:10.1053/j.ajkd.2015.01.034
  3. Janigan DT, Hirsch DJ, Klassen GA, MacDonald AS. Calcified subcutaneous arterioles with infarcts of the subcutis and skin (“calciphylaxis”) in chronic renal failure. Am J Kidney Dis 2000; 35(4):588–597. pmid:10739777
  4. Michaud M, Pourrat J. Cryofibrinogenemia. J Clin Rheumatol 2013; 19(3):142–148. doi:10.1097/RHU.0b013e318289e06e
  5. Galan A, Cowper SE, Bucala R. Nephrogenic systemic fibrosis (nephrogenic fibrosing dermopathy). Curr Opin Rheumatol 2006; 18(6):614–617. doi:10.1097/01.bor.0000245725.94887.8d
  6. Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith LA, Katz SI, eds. Fitzpatrick’s Dermatology in General Medicine. 6th ed. New York, NY: McGraw-Hill Professional; 2003:558–562.
Issue
Cleveland Clinic Journal of Medicine - 85(8)
Issue
Cleveland Clinic Journal of Medicine - 85(8)
Page Number
584-585
Page Number
584-585
Publications
Cleveland Clinic Journal of Medicine
Publications
Cleveland Clinic Journal of Medicine
Topics
Dermatology
Nephrology
Emergency Medicine
Hospital Medicine
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Calcific uremic arteriolopathy
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Calcific uremic arteriolopathy
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calcific uremic arteriolopathy, calciphylaxis, end-stage renal disease, ESRD, leg ulcers, calcium, phosphorus, necrosis, warfarin, pemphigus, cryofibrinogenemia, Mrinali Shetty, Yuvraj Chowdhury, Balaji Yegneswaran
Legacy Keywords
calcific uremic arteriolopathy, calciphylaxis, end-stage renal disease, ESRD, leg ulcers, calcium, phosphorus, necrosis, warfarin, pemphigus, cryofibrinogenemia, Mrinali Shetty, Yuvraj Chowdhury, Balaji Yegneswaran
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