ABSTRACT
Breast fibroepithelial lesions (FELs) include heterogeneous pathological tumors, involving indolent fibroadenoma (FAD) to potentially aggressive phyllodes tumors (PTs). The current grading system remains unreliable in differentiating these tumors due to histological heterogeneity and lack of appropriate markers to monitor the sudden and unpredictable malignant transformation of PTs. Thus, there exists an imminent need for a marker-based diagnostic approach to augment the conventional histological platform that could lead to accurate diagnosis and distinction of FELs. The high- throughput quantitative proteomic analysis suggested that FAD and PTs form distinct clusters away from borderline and malignant though there exist marked differences between them. Interestingly, over-expression of extracellular matrices (ECM) related proteins and epithelial-mesenchymal transition (EMT) markers in borderline PTs led us to hypothesize a model of deposition and degradation leading to ECM remodeling and EMT acquisition triggering its malignant transformation. We also identified three candidate biomarkers such as MUCL1, HTRA1, and VEGDF uniquely expressed in FAD, borderline, and malignant PTs, respectively, which were further validated using immunohistochemistry. The present work shed light on a brief mechanistic framework of PTs aggressive nature and present potential biomarkers to differentiate overlapping FELs that would be of practical utility in augmenting existing diagnosis and disease management for this rare tumor.
ABSTRACT
BACKGROUND: 46 XX male syndrome, a rare case of infertility was first reported by de la Chapelle in 1964. In newborn males, the incidence rate of the syndrome varies from 1/9000 to 1/20000. Here, a case of 46 XX male syndrome is reported with clinical, biochemical and genetic changes of the patient and normal masculine features. CASE PRESENTATION: A 29 year old male with infertility registered at the Sree Avittom Thirunal Hospital of Government Medical College, Thiruvananthapuram for fertility treatment. He was diagnosed with non obstructive azoospermia in repeated semen analysis. Chromosomal analysis on peripheral blood lymphocytes has revealed 46 XX male syndrome and the result was confirmed with Fluorescent In situ Hybridization (FISH). Real time polymerase chain reaction failed to detect genes on azoospermia factor regions, AZFa, AZFb and AZFc of Y chromosome, but detected SRY gene positivity. Masculine features of patient were normal except small sized testis, ejaculatory dysfunction and azoospermia. CONCLUSION: Appearance of the external genitalia will be generally normal in 46 XX with SRY positive males and generally difficult to identify before puberty because there will not be any significant clinical indication. The present case report demonstrates that mere physical or clinical examination may not disclose the genetic defects. Therefore, in addition to general examination, it is essential to perform genetic analysis on men with infertility.
ABSTRACT
Castleman's disease (CD) is a rare disorder characterized by proliferation of the lymphoid tissue. Clinically, it presents in two forms either a unicentric (UC) or multicentric. Mediastinum is the most common location. UC retroperitoneal presentation is rare. We report a case of 29-year-old female who presented with left loin pain, and on abdominal imaging, evaluation identified a retroperitoneal mass in the left hypochondrium in the pararenal space. Mass was surgically excised entirely. Histopathological examination demonstrated hyaline vascular type of CD. CD should be considered in differential diagnosis of retroperitoneal mass, especially in equivocal cases. We also reviewed literature of 134 cases of retroperitoneal CD to analyze the presentation, management, and outcome.
