Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.

Q: Hypocalcemia is the most common complication after total thyroidectomy. Some patients need to stay in the hospital for monitoring of hypocalcemic symptoms and serum calcium levels for several days. We investigated the efficacy and safety of using early postoperative parathyroid hormone (PTH) results for early discharge after thyroidectomy.', 'A retrospective cohort study of 2 sequential groups of patients undergoing total thyroidectomy between January 2010 and March 2013 was undertaken. Patients were divided into 2 groups. In Group 1 (before June 2011), patients had daily monitoring of serum calcium level and hypocalcemic symptoms. They were discharged when calcium level was static and asymptomatic. Postoperative PTH was not utilized for discharge plan. In Group 2 (after June 2011), postoperative PTH and calcium level on day 1 were utilized to dictate subsequent management and discharge plan.', 'Of the 107 patients reviewed, 54 (50.5%) were in Group 1 and 53 (49.5%) were in Group 2. A total of 51 (47.7%) patients developed hypocalcemia. The two groups were comparable in demographic data, early postoperative PTH value, rate of hypocalcemia, the need for oral calcium and vitamin D supplements and rate of permanent hypoparathyroidism. Fewer patients in Group 2 experienced hypocalcemic symptoms, p=0.005. None of the patients in Group 2 needed intravenous calcium supplement (p=0.003). The median postoperative hospital stay for Group 1 was 4 days and for Group 2 was 1 day (p<0.0001).

A: Does postoperative PTH monitoring of hypocalcemia expedite discharge after thyroidectomy?
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Q: The FAS/FASLG system has been proposed to play a key role in germ cell apoptosis. To elucidate the role of the genetic variants of cell death pathway genes in male infertility, we genotyped the polymorphisms of FAS, FASLG and caspase-8 (CASP8) genes and evaluated their effects on sperm apoptosis and semen quality in infertile men.', 'The genotypes of FAS, FASLG and CASP8 were determined in 620 infertile men. Sperm apoptosis rates were measured by terminal deoxynucleotidyl transferase (Tdt)-mediated dUTP nick end labelling (TUNEL) assay, and the semen quality analysis was performed using computer assisted sperm analysis.', 'We found that polymorphisms of FAS-670A/G (rs1800682: A>G) and CASP8-652 6N ins/del (rs3834129: -/CTTACT) were associated with sperm apoptosis and semen quality. Individuals with FAS-670GG showed low apoptosis rate and decreased sperm concentration, compared with the FAS-670AA genotype. Similarly, in comparison with the CASP8-652 6N ins/ins genotype, the CASP8-652 6N (ins/del+del/del) genotypes also showed significantly decreased sperm apoptosis rate and poor sperm motility. Other polymorphisms investigated did not appear to affect sperm apoptosis and semen quality.

A: Are polymorphisms in cell death pathway genes associated with altered sperm apoptosis and poor semen quality?
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Q: Prognosis and treatment of patients with breast carcinoma of no special type (NST) is dependent on a few established parameters, such as tumor size, histological grade, lymph node stage, expression of estrogen receptor, progesterone receptor, and HER-2/neu, and proliferation index. The original Nottingham Prognostic Index (NPI) employs a three-tiered classification system that stratifies patients with breast cancer into good, moderate, and poor prognostic groups. The aim of our study was to use robust immunohistochemical methodology for determination of ER, PR, HER-2/neu, Ki-67, p53, and Bcl-2, and to observe differences in the expression of these markers when patients are stratified according to the original, three-tiered Nottingham Prognostic Index.', 'Paraffin blocks from 120 patients diagnosed with breast carcinoma, NST, were retrieved from our archive. Cases included in the study were female patients previously treated with modified radical mastectomy and axillary dissection.', 'Our study demonstrates that expression of markers of good prognosis, such as ER, PR, and Bcl-2, is seen with higher frequency in good and moderate NPI groups. In contrast, overexpression of HER-2/neu, a marker of adverse prognosis, is more frequent in moderate and poor NPI groups. High proliferation index, as measured by Ki-67, is seen in moderate and poor NPI groups, whereas low proliferation index is seen in good NPI groups.

A:
Does classification of patients with breast cancer according to Nottingham prognostic index highlight significant differences in immunohistochemical marker expression?
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