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Case Reports
. 2021 Jan;185(1):278-281.
doi: 10.1002/ajmg.a.61943. Epub 2020 Oct 27.

Clericuzio-type poikiloderma with neutropenia in a patient from India

Anuradha Bishnoi  1 , Manu Jamwal  2 , Reena Das  2 , Vinod Scaria  3   4 , Vikarn Vishwajeet  5 , Dipankar De  1 , Uma Nahar Saikia  5 , Rahul Mahajan  1
Affiliations
Case Reports

Clericuzio-type poikiloderma with neutropenia in a patient from India

Anuradha Bishnoi et al. Am J Med Genet A. 2021 Jan.

Abstract

A 9-year-old boy presented for evaluation of variegated skin pigmentation. Palms and soles revealed honeycombed hyperpigmented hyperkeratosis. Irregular, firm, skin coloured nodules suggestive of cutaneous calcification were present on both elbows. Total leucocyte count and absolute neutrophil count were 3720/mm3 and 420/mm3 respectively. The neutropenia was not cyclical. Systematic analysis of the whole exome data revealed a homozygous mutation in USB1 gene; chr16:g.58043892TA>-[1/1]. A final diagnosis of poikiloderma with neutropenia- Clericuzio type (PNC) was made. Naegeli Franceschetti Jadassohn, dermatopathia pigmentosa reticularis, PNC and dyskeratosis congenita, all can present with overlapping cutaneous manifestations. Subtle clinical details like thickened nails, hyperextensible joints, calcinosis cutis, characteristic facies and a preceding erythematopapular rash strongly favor the diagnosis of PNC. The index case highlights two novel findings: obliterated dermatoglyphics and mucin deposition (features not described hitherto in PNC).

Keywords: Clericuzio-type poikiloderma with neutropenia; calcinosis cutis; mucin deposition in poikiloderma; reticulate pigmentation.

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References

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