[Breast pilomatrixoma manifested as microcalcifications on mammography: report of two cases].

Pilomatricoma is a benign tumor of hair follicule origin corresponding to a firm subcutaneous nodule requiring histology for diagnosis. Only few breast pilomatricomas have been reported, with imaging showing well defined nodules with microcalcifications. We report two cases of intra-mammary pilomatricomas presenting as ACR BI-RADS 4 and 5 microcalcifications, suspicious for malignant tumors.

Differential O-glycosylation in cortical and medullary thymocytes.

Differentiation of T lymphocytes is characterized by variable expression of CD8/CD4 co-receptor molecules and changes in the glycosylation pattern. In this work, O-glycosylation was analyzed in microsomes from murine thymocytes purified with the PNA and Amaranthus leucocarpus (ALL) lectins, specific for the T antigen (Gal beta1,3GalNAc1,0 Ser/Thr) in cortical and medullary thymocytes, respectively. Three peptides were used as acceptors for UDP-N-acetylgalactosamine: polypeptide N-acetylgalactosaminyl-transferase (GalNAc transferase); the peptide motif TTSAPTTS was the best glycosylated one.

[Can US-guided vacuum-assisted biopsies be an alternative to diagnostic surgery in cases of non-diagnostic core needle biopsy?].

Purpose: To assess US-guided vacuum-assisted biopsies in the diagnosis of suspicious sonographic breast lesions after non-diagnostic core needle biopsies (CNB).

Patients And Methods: Retrospective study of 42 females with suspicious breast lesions at US. CNB previously performed were non-diagnostic.

Specificity of Amaranthus leucocarpus syn. hypocondriacus lectin for O-glycopeptides.

Amaranthus leucocarpus syn. hypochondriacus lectin (ALL) has been shown to be specific for N-acetyl-D-galactosamine (GalNAc). In this work, we determined a value of 1.

[Value of ultrasound detection of post-Mammotome scar for preoperative localization of breast microcalcifications].

Purpose: We attempted to find ultrasound scar subsequent to vacuum assisted breast biopsy (Mammotome system) previously performed, and to enhance its value for preoperative localization.

Materials And Methods: Our study included 34 females requiring needle localization prior to surgery. They previously had Mammotome core biopsies for clustered microcalcifications.