[Pure primary breast squamous cell carcinoma]

Area of Science:

• Oncology
• Pathology
• Surgical Oncology

Background:

• Pure and primary breast squamous cell carcinoma is an exceptionally rare breast malignancy, accounting for less than 0.1% of all breast cancers.
• Accurate diagnosis requires strict histologic and clinical criteria to differentiate it from other squamous lesions and metastatic cancers.
• This aggressive tumor type is often refractory to treatment and carries a poorer prognosis compared to non-squamous breast tumors.

Observation:

• The authors report a case of a patient diagnosed with pure primary breast squamous cell carcinoma.
• The case involved a comprehensive review of existing literature concerning diagnostic standards, characteristic features, origins, outlook, and treatment strategies.

Findings:

• The study emphasizes the rarity and aggressive nature of primary breast squamous cell carcinoma.
• Diagnostic challenges include distinguishing it from squamous differentiation in ductal carcinoma, skin-originated squamous tumors, and metastatic disease.
• The review covers essential aspects from morphology to therapeutic interventions.

Implications:

• Improved understanding of diagnostic criteria can lead to earlier and more accurate detection of this rare breast cancer.
• Knowledge of histogenesis and prognostic factors can guide treatment decisions for better patient outcomes.
• This review provides a valuable resource for clinicians managing patients with primary breast squamous cell carcinoma.