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Case number:	090
Age:	27
Clinical presentation:	Premenopausal woman with average risk of developing breast cancer presented with pain in the right breast. Examination revealed a lump measuring 1.5 cm in diameter in the right upper outer quadrant.

Ultrasound:

Ultrasound features: Right breast, upper outer quadrant, 10 o’clock in axillary tail
‣ Mass
• Location:	Right breast, upper outer quadrant, 10 o’clock in axillary tail
• Number:	1
• Size:	1.7 × 1.0 cm
• Shape:	Irregular
• Orientation:	Not parallel
• Margins:	Angular
• Echo pattern:	Hypoechoic
• Posterior features:	No posterior features
‣ Calcifications:	None
‣ Associated features:	Peripheral vascularity and vessels in rim
‣ Special cases:	None

BI-RADS:

BI-RADS Category: 2 (benign)

Further assessment:

Further assessment advised: Referral for cytology

Cytology:

Cytology features:
‣ Type of sample:	FNAC (solid lesion)
‣ Site of biopsy:
• Laterality:	Right
• Quadrant:	Upper outer
• Localization technique:	Palpation
• Nature of aspirate:	2 mL of purulent yellowish white material
‣ Cytological description:	Smears show plenty of neutrophils admixed with a few lymphocytes on a necrotic background
‣ Reporting category:	Benign
‣ Diagnosis:	Acute inflammation and breast abscess
‣ Comments:	None

Case summary:

Premenopausal woman presented with right breast pain. Diagnosed as inflammatory lesion in right breast, BI-RADS 2 on imaging and as acute inflammation, breast abscess on cytology.

Learning points:

Inflammatory lesions can mimic the morphological features of malignancy, such as an irregular mass with spiculated margins. Triple assessment will confirm the diagnosis and follow-up reveals complete resolution of the inflammatory lesion.