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The Diagnosis: Lichenoid and Granulomatous Dermatitis in the Setting of Secondary Syphilis
Syphilis, an infectious disease that has risen in incidence and is most commonly reported in men who have sex with men, involves a vast array of clinical and histologic presentations.1 Clinically, secondary syphilis involves an erythematous maculopapular eruption on the face, trunk, palms, soles, or genital area.2 The characteristic histologic features for secondary syphilis include endothelial swelling, interstitial inflammatory array, irregular acanthosis, elongated rete ridges, and vacuolar interface dermatitis with lymphocytes and plasma cells.1 Syphilitic infection has been associated with lichenoid and granulomatous dermatitis, which is an inflammatory skin disease described by Magro and Crowson.3 Lichenoid and granulomatous dermatitis has been linked to various systemic disorders, including chronic hepatitis C, Crohn disease, rheumatoid arthritis, endocrinopathy, subacute cutaneous lupus erythematosus, secondary syphilis, prior herpes infection, tuberculoid leprosy, mycobacterial infection, and human immunodeficiency virus infection.3-7 For this patient, given histopathology findings, clinical presentation, and positive rapid plasma reagin serologies, a diagnosis of lichenoid and granulomatous dermatitis in the setting of a secondary syphilis infection was established. A comprehensive investigation should be conducted to consider secondary syphilis or other systemic diseases in patients with a histologic finding of lichenoid and granulomatous dermatitis.
Histologically, lichenoid and granulomatous dermatitis cases show a bandlike infiltrate of lymphocytes with neighboring histiocytes along the dermoepidermal junction, accompanied by epithelial changes of dyskeratosis, vasculopathy, and colloid body formation, in addition to a dermal histiocytic component.3 Our patient's biopsy showed a lichenoid reaction pattern with vacuolar interface changes, dyskeratosis, plump endothelial cells, and small collections of plasma cells. Additionally, there was a granulomatous component in the dermis with histiocytes admixed with lymphocytes and plasma cells. The presence of spirochetes was confirmed with antitreponemal immunohistochemical stain (Figure 1). Quantitative rapid plasma reagin was 1:64 (reference range, <1:1) and Treponema pallidum antibody was reactive.
Interstitial granulomatous dermatitis has a variable clinical presentation, often with red-purple annular plaques, hyperpigmented papules, and nodules frequently in a linear arrangement and predominantly on the trunk, thighs, groin, or buttocks.8,9 On histopathology, there are histiocytes in the reticular dermis and/or a macrophage infiltrate in the mid to deep dermis with collections of degenerated collagen (Figure 2).8,10 An interstitial infiltrate of eosinophils and neutrophils also may be appreciated, but mucin generally is absent.8,11 This condition often coexists with rheumatic and systemic autoimmune diseases.8-10
Interstitial granuloma annulare is a noninfectious granulomatous skin condition that often presents clinically as asymptomatic annular red-brown patches, usually on the extremities.11-13 On histopathology, an interstitial or palisaded inflammatory infiltrate with histiocytes and multinucleated giant cells may be seen along with collagen degeneration or collagen bundles without necrosis (Figure 3).9 Mucin often is associated with the histiocytes.11 Of note, our patient's skin biopsy shows interface dermatitis, differentiating it from both interstitial granuloma annulare and interstitial granulomatous dermatitis.
Postviral granulomatous reactions are the most frequently reported types of reactions to occur at the location of herpes zoster infection up to years after the initial disease. Wolf isotopic reaction encompasses skin reactions in the body region of formerly resolved skin disease, commonly herpesvirus infection.14,15 This manifestation may occur due to a hypersensitivity reaction from enduring viral proteins, resident memory T cells, or local neuroimmune imbalance from herpesvirus-induced injury to dermal sensory nerve fibers.14-17 Clinically, patients present with red-purple pruritic papules and plaques in a bandlike unilateral pattern, usually in the same region as the prior herpes infection and often accompanied by postherpetic neuralgia.16-19 Of note, our patient's clinical findings were more diffuse than the frequently localized and often linear distribution seen in postherpetic granulomatous reaction. On histopathology, granulomatous or lichenoid tissue reaction most commonly is appreciated.15 Specifically, interstitial granulomatous dermatitis with histiocytes, lymphocytes, and multinucleated giant cells showing elastophagocytosis and an inflammatory infiltrate with lymphocytes and plasma cells around vasculature, eccrine glands, and nerves can be noted (Figure 4).19
Lupus erythematosus is an autoimmune condition with a wide array of clinical features, including skin manifestations and systemic symptoms. Specifically, discoid lupus erythematosus presents with clearly outlined, red-pink macules or papules with scaling. Histologic features include keratotic follicular plugging, acanthosis, dermal mucin, thickening of the basement membrane zone, and dense lymphocytic infiltrate (Figure 5).20
- Flamm A, Parikh K, Xie Q, et al. Histologic features of secondary syphilis: a multicenter retrospective review. J Am Acad Dermatol. 2015;73:325-330.
- Zeltser R, Kurban AK. Syphilis. Clin Dermatol. 2004;22:461-468.
- Magro CM, Crowson AN. Lichenoid and granulomatous dermatitis. Int J Dermatol. 2000;39:12-33.
- S Breza T Jr, Magro CM. Lichenoid and granulomatous dermatitis associated with atypical mycobacterium infections. J Cutan Pathol. 2006;33:512-515.
- Granel B, Serratrice J, Rey J, et al. Chronic hepatitis C virus infection associated with a generalized granuloma annulare. J Am Acad Dermatol. 2000;43(5, pt 2):918-919.
- Jorizzo JL, Gonzalez EB, Apisarnthanarax P, et al. Pigmented purpuric eruption in a patient with rheumatoid arthritis. Arch Intern Med. 1982;142:2184-2185.
- Magro CM, Crowson AN, Regauer S. Granuloma annulare and necrobiosis lipoidica tissue reactions as a manifestation of systemic disease. Hum Pathol. 1996;27:50-56.
- Błażewicz I, Szczerkowska-Dobosz A, Pęksa R, et al. Interstitial granulomatous dermatitis: a characteristic histological pattern with variable clinical manifestations. Postepy Dermatol Alergol. 2015;32:475-477.
- Sezer E, Luzar B, Calonje E. Secondary syphilis with an interstitial granuloma annulare-like histopathologic pattern. J Cutan Pathol. 2011;38:439-442.
- Peroni A, Colato C, Schena D, et al. Interstitial granulomatous dermatitis: a distinct entity with characteristic histological and clinical pattern. Br J Dermatol. 2012;166:775-783.
- Sakiyama T, Hirai I, Konohana A, et al. Interstitial-type granuloma annulare associated with Sjögren syndrome. J Dtsch Dermatol Ges. 2014;12:415-416.
- Spring P, Vernez M, Maniu CM, et al. Localized interstitial granuloma annulare induced by subcutaneous injections for desensitization. Dermatol Online J. 2013;19:18572.
- Kluger N, Moguelet P, Chaslin-Ferbus D, et al. Generalized interstitial granuloma annulare induced by pegylated interferon-alpha. Dermatology. 2006;213:248-249.
- Ruocco E, Baroni A, Cutrì FT, et al. Granuloma annulare in a site of healed herpes zoster: Wolf's isotopic response. J Eur Acad Dermatol Venereol. 2003;17:686-688.
- Ise M, Tanese K, Adachi T, et al. Postherpetic Wolf's isotopic response: possible contribution of resident memory T cells to the pathogenesis of lichenoid reaction. Br J Dermatol. 2015;173:1331-1334.
- Lora V, Cota C, Kanitakis J. Zosteriform lichen planus after herpes zoster: report of a new case of Wolf's isotopic phenomenon and literature review. Dermatol Online J. 2014;20. pii:13030/qt5vf99178.
- Lin CH, Chen HC, Gao HW, et al. Wolf's post-herpetic isotopic response to tocilizumab for rheumatoid arthritis. Australas J Dermatol. 2018;59:E135-E137.
- Melgar E, Henry J, Valois A, et al. Extra-facial Lever granuloma on a herpes zoster scar: Wolf's isotopic response. Ann Dermatol Venereol. 2018;145:354-358.
- Ferenczi K, Rosenberg AS, McCalmont TH, et al. Herpes zoster granulomatous dermatitis: histopathologic findings in a case series. J Cutan Pathol. 2015;42:739-745.
- Li Q, Wu H, Liao W, et al. A comprehensive review of immune-mediated dermatopathology in systemic lupus erythematosus. J Autoimmun. 2018;93:1-15.
The Diagnosis: Lichenoid and Granulomatous Dermatitis in the Setting of Secondary Syphilis
Syphilis, an infectious disease that has risen in incidence and is most commonly reported in men who have sex with men, involves a vast array of clinical and histologic presentations.1 Clinically, secondary syphilis involves an erythematous maculopapular eruption on the face, trunk, palms, soles, or genital area.2 The characteristic histologic features for secondary syphilis include endothelial swelling, interstitial inflammatory array, irregular acanthosis, elongated rete ridges, and vacuolar interface dermatitis with lymphocytes and plasma cells.1 Syphilitic infection has been associated with lichenoid and granulomatous dermatitis, which is an inflammatory skin disease described by Magro and Crowson.3 Lichenoid and granulomatous dermatitis has been linked to various systemic disorders, including chronic hepatitis C, Crohn disease, rheumatoid arthritis, endocrinopathy, subacute cutaneous lupus erythematosus, secondary syphilis, prior herpes infection, tuberculoid leprosy, mycobacterial infection, and human immunodeficiency virus infection.3-7 For this patient, given histopathology findings, clinical presentation, and positive rapid plasma reagin serologies, a diagnosis of lichenoid and granulomatous dermatitis in the setting of a secondary syphilis infection was established. A comprehensive investigation should be conducted to consider secondary syphilis or other systemic diseases in patients with a histologic finding of lichenoid and granulomatous dermatitis.
Histologically, lichenoid and granulomatous dermatitis cases show a bandlike infiltrate of lymphocytes with neighboring histiocytes along the dermoepidermal junction, accompanied by epithelial changes of dyskeratosis, vasculopathy, and colloid body formation, in addition to a dermal histiocytic component.3 Our patient's biopsy showed a lichenoid reaction pattern with vacuolar interface changes, dyskeratosis, plump endothelial cells, and small collections of plasma cells. Additionally, there was a granulomatous component in the dermis with histiocytes admixed with lymphocytes and plasma cells. The presence of spirochetes was confirmed with antitreponemal immunohistochemical stain (Figure 1). Quantitative rapid plasma reagin was 1:64 (reference range, <1:1) and Treponema pallidum antibody was reactive.
Interstitial granulomatous dermatitis has a variable clinical presentation, often with red-purple annular plaques, hyperpigmented papules, and nodules frequently in a linear arrangement and predominantly on the trunk, thighs, groin, or buttocks.8,9 On histopathology, there are histiocytes in the reticular dermis and/or a macrophage infiltrate in the mid to deep dermis with collections of degenerated collagen (Figure 2).8,10 An interstitial infiltrate of eosinophils and neutrophils also may be appreciated, but mucin generally is absent.8,11 This condition often coexists with rheumatic and systemic autoimmune diseases.8-10
Interstitial granuloma annulare is a noninfectious granulomatous skin condition that often presents clinically as asymptomatic annular red-brown patches, usually on the extremities.11-13 On histopathology, an interstitial or palisaded inflammatory infiltrate with histiocytes and multinucleated giant cells may be seen along with collagen degeneration or collagen bundles without necrosis (Figure 3).9 Mucin often is associated with the histiocytes.11 Of note, our patient's skin biopsy shows interface dermatitis, differentiating it from both interstitial granuloma annulare and interstitial granulomatous dermatitis.
Postviral granulomatous reactions are the most frequently reported types of reactions to occur at the location of herpes zoster infection up to years after the initial disease. Wolf isotopic reaction encompasses skin reactions in the body region of formerly resolved skin disease, commonly herpesvirus infection.14,15 This manifestation may occur due to a hypersensitivity reaction from enduring viral proteins, resident memory T cells, or local neuroimmune imbalance from herpesvirus-induced injury to dermal sensory nerve fibers.14-17 Clinically, patients present with red-purple pruritic papules and plaques in a bandlike unilateral pattern, usually in the same region as the prior herpes infection and often accompanied by postherpetic neuralgia.16-19 Of note, our patient's clinical findings were more diffuse than the frequently localized and often linear distribution seen in postherpetic granulomatous reaction. On histopathology, granulomatous or lichenoid tissue reaction most commonly is appreciated.15 Specifically, interstitial granulomatous dermatitis with histiocytes, lymphocytes, and multinucleated giant cells showing elastophagocytosis and an inflammatory infiltrate with lymphocytes and plasma cells around vasculature, eccrine glands, and nerves can be noted (Figure 4).19
Lupus erythematosus is an autoimmune condition with a wide array of clinical features, including skin manifestations and systemic symptoms. Specifically, discoid lupus erythematosus presents with clearly outlined, red-pink macules or papules with scaling. Histologic features include keratotic follicular plugging, acanthosis, dermal mucin, thickening of the basement membrane zone, and dense lymphocytic infiltrate (Figure 5).20
The Diagnosis: Lichenoid and Granulomatous Dermatitis in the Setting of Secondary Syphilis
Syphilis, an infectious disease that has risen in incidence and is most commonly reported in men who have sex with men, involves a vast array of clinical and histologic presentations.1 Clinically, secondary syphilis involves an erythematous maculopapular eruption on the face, trunk, palms, soles, or genital area.2 The characteristic histologic features for secondary syphilis include endothelial swelling, interstitial inflammatory array, irregular acanthosis, elongated rete ridges, and vacuolar interface dermatitis with lymphocytes and plasma cells.1 Syphilitic infection has been associated with lichenoid and granulomatous dermatitis, which is an inflammatory skin disease described by Magro and Crowson.3 Lichenoid and granulomatous dermatitis has been linked to various systemic disorders, including chronic hepatitis C, Crohn disease, rheumatoid arthritis, endocrinopathy, subacute cutaneous lupus erythematosus, secondary syphilis, prior herpes infection, tuberculoid leprosy, mycobacterial infection, and human immunodeficiency virus infection.3-7 For this patient, given histopathology findings, clinical presentation, and positive rapid plasma reagin serologies, a diagnosis of lichenoid and granulomatous dermatitis in the setting of a secondary syphilis infection was established. A comprehensive investigation should be conducted to consider secondary syphilis or other systemic diseases in patients with a histologic finding of lichenoid and granulomatous dermatitis.
Histologically, lichenoid and granulomatous dermatitis cases show a bandlike infiltrate of lymphocytes with neighboring histiocytes along the dermoepidermal junction, accompanied by epithelial changes of dyskeratosis, vasculopathy, and colloid body formation, in addition to a dermal histiocytic component.3 Our patient's biopsy showed a lichenoid reaction pattern with vacuolar interface changes, dyskeratosis, plump endothelial cells, and small collections of plasma cells. Additionally, there was a granulomatous component in the dermis with histiocytes admixed with lymphocytes and plasma cells. The presence of spirochetes was confirmed with antitreponemal immunohistochemical stain (Figure 1). Quantitative rapid plasma reagin was 1:64 (reference range, <1:1) and Treponema pallidum antibody was reactive.
Interstitial granulomatous dermatitis has a variable clinical presentation, often with red-purple annular plaques, hyperpigmented papules, and nodules frequently in a linear arrangement and predominantly on the trunk, thighs, groin, or buttocks.8,9 On histopathology, there are histiocytes in the reticular dermis and/or a macrophage infiltrate in the mid to deep dermis with collections of degenerated collagen (Figure 2).8,10 An interstitial infiltrate of eosinophils and neutrophils also may be appreciated, but mucin generally is absent.8,11 This condition often coexists with rheumatic and systemic autoimmune diseases.8-10
Interstitial granuloma annulare is a noninfectious granulomatous skin condition that often presents clinically as asymptomatic annular red-brown patches, usually on the extremities.11-13 On histopathology, an interstitial or palisaded inflammatory infiltrate with histiocytes and multinucleated giant cells may be seen along with collagen degeneration or collagen bundles without necrosis (Figure 3).9 Mucin often is associated with the histiocytes.11 Of note, our patient's skin biopsy shows interface dermatitis, differentiating it from both interstitial granuloma annulare and interstitial granulomatous dermatitis.
Postviral granulomatous reactions are the most frequently reported types of reactions to occur at the location of herpes zoster infection up to years after the initial disease. Wolf isotopic reaction encompasses skin reactions in the body region of formerly resolved skin disease, commonly herpesvirus infection.14,15 This manifestation may occur due to a hypersensitivity reaction from enduring viral proteins, resident memory T cells, or local neuroimmune imbalance from herpesvirus-induced injury to dermal sensory nerve fibers.14-17 Clinically, patients present with red-purple pruritic papules and plaques in a bandlike unilateral pattern, usually in the same region as the prior herpes infection and often accompanied by postherpetic neuralgia.16-19 Of note, our patient's clinical findings were more diffuse than the frequently localized and often linear distribution seen in postherpetic granulomatous reaction. On histopathology, granulomatous or lichenoid tissue reaction most commonly is appreciated.15 Specifically, interstitial granulomatous dermatitis with histiocytes, lymphocytes, and multinucleated giant cells showing elastophagocytosis and an inflammatory infiltrate with lymphocytes and plasma cells around vasculature, eccrine glands, and nerves can be noted (Figure 4).19
Lupus erythematosus is an autoimmune condition with a wide array of clinical features, including skin manifestations and systemic symptoms. Specifically, discoid lupus erythematosus presents with clearly outlined, red-pink macules or papules with scaling. Histologic features include keratotic follicular plugging, acanthosis, dermal mucin, thickening of the basement membrane zone, and dense lymphocytic infiltrate (Figure 5).20
- Flamm A, Parikh K, Xie Q, et al. Histologic features of secondary syphilis: a multicenter retrospective review. J Am Acad Dermatol. 2015;73:325-330.
- Zeltser R, Kurban AK. Syphilis. Clin Dermatol. 2004;22:461-468.
- Magro CM, Crowson AN. Lichenoid and granulomatous dermatitis. Int J Dermatol. 2000;39:12-33.
- S Breza T Jr, Magro CM. Lichenoid and granulomatous dermatitis associated with atypical mycobacterium infections. J Cutan Pathol. 2006;33:512-515.
- Granel B, Serratrice J, Rey J, et al. Chronic hepatitis C virus infection associated with a generalized granuloma annulare. J Am Acad Dermatol. 2000;43(5, pt 2):918-919.
- Jorizzo JL, Gonzalez EB, Apisarnthanarax P, et al. Pigmented purpuric eruption in a patient with rheumatoid arthritis. Arch Intern Med. 1982;142:2184-2185.
- Magro CM, Crowson AN, Regauer S. Granuloma annulare and necrobiosis lipoidica tissue reactions as a manifestation of systemic disease. Hum Pathol. 1996;27:50-56.
- Błażewicz I, Szczerkowska-Dobosz A, Pęksa R, et al. Interstitial granulomatous dermatitis: a characteristic histological pattern with variable clinical manifestations. Postepy Dermatol Alergol. 2015;32:475-477.
- Sezer E, Luzar B, Calonje E. Secondary syphilis with an interstitial granuloma annulare-like histopathologic pattern. J Cutan Pathol. 2011;38:439-442.
- Peroni A, Colato C, Schena D, et al. Interstitial granulomatous dermatitis: a distinct entity with characteristic histological and clinical pattern. Br J Dermatol. 2012;166:775-783.
- Sakiyama T, Hirai I, Konohana A, et al. Interstitial-type granuloma annulare associated with Sjögren syndrome. J Dtsch Dermatol Ges. 2014;12:415-416.
- Spring P, Vernez M, Maniu CM, et al. Localized interstitial granuloma annulare induced by subcutaneous injections for desensitization. Dermatol Online J. 2013;19:18572.
- Kluger N, Moguelet P, Chaslin-Ferbus D, et al. Generalized interstitial granuloma annulare induced by pegylated interferon-alpha. Dermatology. 2006;213:248-249.
- Ruocco E, Baroni A, Cutrì FT, et al. Granuloma annulare in a site of healed herpes zoster: Wolf's isotopic response. J Eur Acad Dermatol Venereol. 2003;17:686-688.
- Ise M, Tanese K, Adachi T, et al. Postherpetic Wolf's isotopic response: possible contribution of resident memory T cells to the pathogenesis of lichenoid reaction. Br J Dermatol. 2015;173:1331-1334.
- Lora V, Cota C, Kanitakis J. Zosteriform lichen planus after herpes zoster: report of a new case of Wolf's isotopic phenomenon and literature review. Dermatol Online J. 2014;20. pii:13030/qt5vf99178.
- Lin CH, Chen HC, Gao HW, et al. Wolf's post-herpetic isotopic response to tocilizumab for rheumatoid arthritis. Australas J Dermatol. 2018;59:E135-E137.
- Melgar E, Henry J, Valois A, et al. Extra-facial Lever granuloma on a herpes zoster scar: Wolf's isotopic response. Ann Dermatol Venereol. 2018;145:354-358.
- Ferenczi K, Rosenberg AS, McCalmont TH, et al. Herpes zoster granulomatous dermatitis: histopathologic findings in a case series. J Cutan Pathol. 2015;42:739-745.
- Li Q, Wu H, Liao W, et al. A comprehensive review of immune-mediated dermatopathology in systemic lupus erythematosus. J Autoimmun. 2018;93:1-15.
- Flamm A, Parikh K, Xie Q, et al. Histologic features of secondary syphilis: a multicenter retrospective review. J Am Acad Dermatol. 2015;73:325-330.
- Zeltser R, Kurban AK. Syphilis. Clin Dermatol. 2004;22:461-468.
- Magro CM, Crowson AN. Lichenoid and granulomatous dermatitis. Int J Dermatol. 2000;39:12-33.
- S Breza T Jr, Magro CM. Lichenoid and granulomatous dermatitis associated with atypical mycobacterium infections. J Cutan Pathol. 2006;33:512-515.
- Granel B, Serratrice J, Rey J, et al. Chronic hepatitis C virus infection associated with a generalized granuloma annulare. J Am Acad Dermatol. 2000;43(5, pt 2):918-919.
- Jorizzo JL, Gonzalez EB, Apisarnthanarax P, et al. Pigmented purpuric eruption in a patient with rheumatoid arthritis. Arch Intern Med. 1982;142:2184-2185.
- Magro CM, Crowson AN, Regauer S. Granuloma annulare and necrobiosis lipoidica tissue reactions as a manifestation of systemic disease. Hum Pathol. 1996;27:50-56.
- Błażewicz I, Szczerkowska-Dobosz A, Pęksa R, et al. Interstitial granulomatous dermatitis: a characteristic histological pattern with variable clinical manifestations. Postepy Dermatol Alergol. 2015;32:475-477.
- Sezer E, Luzar B, Calonje E. Secondary syphilis with an interstitial granuloma annulare-like histopathologic pattern. J Cutan Pathol. 2011;38:439-442.
- Peroni A, Colato C, Schena D, et al. Interstitial granulomatous dermatitis: a distinct entity with characteristic histological and clinical pattern. Br J Dermatol. 2012;166:775-783.
- Sakiyama T, Hirai I, Konohana A, et al. Interstitial-type granuloma annulare associated with Sjögren syndrome. J Dtsch Dermatol Ges. 2014;12:415-416.
- Spring P, Vernez M, Maniu CM, et al. Localized interstitial granuloma annulare induced by subcutaneous injections for desensitization. Dermatol Online J. 2013;19:18572.
- Kluger N, Moguelet P, Chaslin-Ferbus D, et al. Generalized interstitial granuloma annulare induced by pegylated interferon-alpha. Dermatology. 2006;213:248-249.
- Ruocco E, Baroni A, Cutrì FT, et al. Granuloma annulare in a site of healed herpes zoster: Wolf's isotopic response. J Eur Acad Dermatol Venereol. 2003;17:686-688.
- Ise M, Tanese K, Adachi T, et al. Postherpetic Wolf's isotopic response: possible contribution of resident memory T cells to the pathogenesis of lichenoid reaction. Br J Dermatol. 2015;173:1331-1334.
- Lora V, Cota C, Kanitakis J. Zosteriform lichen planus after herpes zoster: report of a new case of Wolf's isotopic phenomenon and literature review. Dermatol Online J. 2014;20. pii:13030/qt5vf99178.
- Lin CH, Chen HC, Gao HW, et al. Wolf's post-herpetic isotopic response to tocilizumab for rheumatoid arthritis. Australas J Dermatol. 2018;59:E135-E137.
- Melgar E, Henry J, Valois A, et al. Extra-facial Lever granuloma on a herpes zoster scar: Wolf's isotopic response. Ann Dermatol Venereol. 2018;145:354-358.
- Ferenczi K, Rosenberg AS, McCalmont TH, et al. Herpes zoster granulomatous dermatitis: histopathologic findings in a case series. J Cutan Pathol. 2015;42:739-745.
- Li Q, Wu H, Liao W, et al. A comprehensive review of immune-mediated dermatopathology in systemic lupus erythematosus. J Autoimmun. 2018;93:1-15.
A 54-year-old man presented with painful, nonpruritic, erythematous papules that began on the scrotum. The eruption progressed to involve the trunk, arms, and legs.