[Disseminated nodular primary localized cutaneous amyloidosis].

Area of Science:

• Dermatology
• Pathology
• Protein biochemistry

Background:

• Amyloid deposition in tissues occurs in various clinical settings, including the skin.
• Primary localized cutaneous amyloidosis (PLCA) is confined to the skin, with macular and lichenoid forms being most common.
• Nodular amyloidosis is a rare subtype of PLCA with distinct characteristics.

Observation:

• This report details a rare case of nodular primary localized cutaneous amyloidosis.
• The patient presented with disseminated plaques and nodules on the skin.
• No systemic disease involvement was detected during a 3-year follow-up period.

Findings:

• The case highlights the potential for disseminated nodular lesions in PLCA.
• The absence of systemic disease suggests a localized disease course in this instance.
• Clinical presentation and prognosis may differ significantly from macular and lichenoid amyloidosis.

Implications:

• This case expands the understanding of nodular primary localized cutaneous amyloidosis presentation.
• It underscores the importance of differentiating nodular amyloidosis from other cutaneous forms.
• Further research into the pathogenesis and long-term outcomes of nodular amyloidosis is warranted.