Nikolaos Blontzos

Differential Expression of Insulin Growth Factor 1 (IGF-1) Isoforms in Different Types of Endometriosis: Preliminary Results of a Single-Center Study

Endometriosis is a benign, estrogen-dependent gynecological condition with an uncertain exact pathogenetic mechanism. The aim of this study was to evaluate the potential differential expression of Insulin Growth Factor 1 (IGF-1) isoforms in deeply infiltrating endometriotic (DIE) lesions, in ovarian endometriomas, and in the eutopic endometrium of the same endometriosis patients and to compare their expression with that in the eutopic endometrium of women without endometriosis. A total of 39 patients were included: 28 with endometriosis, of whom 15 had endometriomas only, 7 had DIE nodules only, and 6 had both DIE and endometriomas, and 11 without endometriosis served as controls. We noticed a similar pattern of expression between IGF-1Ea and IGF-1Ec, which differed from that of the IGF-1Eb isoform, possibly implying differential biological actions of different isoforms in DIE subtypes. We observed a tendency of lower expression of IGF-1Ea and IGF-1Ec in endometriomas without DIE compared to endometriomas with concurrent DIE or in DIE nodules. In conclusion, differential expression of IGF-1 isoforms may indicate that DIE with its associated ovarian lesions and simple ovarian endometriosis should be considered as two forms of the disease developing under different molecular pathways.

Primary Peritoneal Serous Carcinoma Detected by Abnormal Cervical Smear: a Case Report

Primary peritoneal serous carcinoma (PPSC) is a rare malignancy, the clinical characteristics of which resemble ovarian serous carcinoma. We present a rare case of PPSC detected by an abnormal cervical smear, the first one with an absence of ovarian tissue at the time of the initial diagnosis. A 59-year-old asymptomatic woman presented with glandular atypia on routine Papanicolaou smear. Endocervical and endometrial curettage showed an adenocarcinoma with focal squamous differentiation and uncertain further classification. The patient had a past surgical history of bilateral salpingoophorectomy due to endometriosis. Abdominal MRI depicted omental multinodularity, great amount of ascites and possible endometrial tumor. The patient underwent total hysterectomy, omentectomy and biopsies of implants on Douglass pouch.  Surgical and histological findings were consistent with primary peritoneal serous carcinoma.  Abnormal pap smear could rarely be suggestive of extrauterine malignancies, such as peritoneal cancer.