-
Journal Der Deutschen Dermatologischen... Dec 2023
Topics: Humans; Pityriasis Lichenoides; Methotrexate; Nail Diseases; Nails, Malformed; Pityriasis
PubMed: 37847905
DOI: 10.1111/ddg.15253 -
JAAD Case Reports Sep 2022
PubMed: 35875513
DOI: 10.1016/j.jdcr.2022.07.017 -
Dermatopathology (Basel, Switzerland) Jul 2022Pityriasis lichenoides is an acute and/or chronic skin disease associated with recurrent erythematous papules that self-resolve. While its etiology is unknown, preceding...
Pityriasis lichenoides is an acute and/or chronic skin disease associated with recurrent erythematous papules that self-resolve. While its etiology is unknown, preceding viral infection may play a role. We present an atypical case of a 40-year-old woman with pityriasis lichenoides et varioliformis acuta as a complication of a COVID-19 infection.
PubMed: 35892481
DOI: 10.3390/dermatopathology9030028 -
European Journal of Dermatology : EJD Jun 2023
Topics: Humans; Pityriasis Lichenoides; Antibodies, Monoclonal, Humanized
PubMed: 37594343
DOI: 10.1684/ejd.2023.4483 -
Indian Journal of Dermatology 2022
PubMed: 36578738
DOI: 10.4103/ijd.ijd_279_22 -
Acta Dermato-venereologica Sep 2021
Review
Topics: Humans; Papillomavirus Vaccines; Pityriasis Lichenoides
PubMed: 34515802
DOI: 10.2340/00015555-3921 -
Journal of the American Academy of... Feb 2022
Methotrexate for pityriasis lichenoides et varioliformis acuta (Mucha-Habermann disease) and pityriasis lichenoides chronica: A retrospective case series of 33 patients with an emphasis on outcomes.
Topics: Humans; Methotrexate; Pityriasis Lichenoides; Retrospective Studies
PubMed: 34592383
DOI: 10.1016/j.jaad.2021.09.045 -
Dermatology (Basel, Switzerland) 2020Poikilodermatous mycosis fungoides (pMF) is characterized by poikiloderma areas, typically involving the major flexural areas and trunk. Its presentation can be... (Comparative Study)
Comparative Study
BACKGROUND
Poikilodermatous mycosis fungoides (pMF) is characterized by poikiloderma areas, typically involving the major flexural areas and trunk. Its presentation can be generalized or admixed with other forms of MF. Previous studies fail to correlate the clinical presentation with prognosis and laboratory findings. Some reports show pityriasis lichenoides chronica (PLC) preceding the poikiloderma.
OBJECTIVES
Correlate prognostic, histopathological and molecular aspects of pMF with its clinical presentation.
METHODS
Retrospective analysis of 14 cases of generalized pMF (GpMF), 22 of localized pMF (LpMF) and 17 of pMF admixed with other forms of MF (mix-pMF).
RESULTS
Female predominance and lower age at diagnosis was found in all groups compared to classic MF, a high prevalence of PLC-like lesions in the GpMF group and a high rate of hypopigmented lesions in the mix-pMF group. There were 2 deaths within the GpMF group. Histology was similar to previously reported findings, as was the prevalence of CD4 T-cell infiltrate, compared to CD8. The T-cell clonality positivity was lower in the GpMF group, compared to other groups (27% GpMF, 80% LpMF and 100% mix-pMF).
DISCUSSION
This is the first article to categorize the different forms of pMF and correlate them with clinical and laboratory findings. The dermatological presentation differs among the groups. There was a high frequency of PLC-like lesions within the GpMF group and of hypopigmented lesions in mix-pMF. The histological and immunohistochemical findings were similar to those previously reported. Aggressive treatments are not recommended due to the good prognosis of all pMF forms. The low positivity of T-cell clonality in the GpMF group should be investigated.
Topics: Clone Cells; Female; Humans; Immunohistochemistry; Male; Middle Aged; Mycosis Fungoides; Parapsoriasis; Prognosis; Retrospective Studies; Skin Neoplasms; T-Lymphocytes
PubMed: 31550709
DOI: 10.1159/000502027 -
Clinical, Cosmetic and Investigational... 2022Pityriasis lichenoides et varioliformis acuta (PLEVA) and lymphomatoid papulosis (LyP) are uncommon inflammatory skin disorders that occasionally share...
Pityriasis lichenoides et varioliformis acuta (PLEVA) and lymphomatoid papulosis (LyP) are uncommon inflammatory skin disorders that occasionally share clinicopathological features. Differentiating between the two entities remains problematic, and a definitive diagnosis usually requires multi-step investigations, which is an enormous challenge to physicians. We hereby report a rare case of a 22-year-old female patient diagnosed with PLEVA who later developed LyP type F, a new histological variant of LyP. Our report highlights that long-term follow-up is essential to determine associated hematologic malignancies, particularly in cases with recalcitrant or progressive cutaneous lesions of PLEVA and/or LyP.
PubMed: 36065341
DOI: 10.2147/CCID.S379577 -
International Journal of Dermatology Dec 2021
Topics: Humans; Lymphoma; Pityriasis Lichenoides; Waldenstrom Macroglobulinemia
PubMed: 33934331
DOI: 10.1111/ijd.15636