Detection and genotyping of human papillomavirus in breast cancer tissues from Iraqi patients.

Studies have suggested a possible link between breast cancer pathogenesis and human papillomavirus (HPV) infection. This study in Iraq used in situ hybridization to detect the frequency and genotyping of HPV in tissue specimens from 129 patients diagnosed with malignant breast cancer, 24 with benign breast tumours and 20 healthy controls. In the breast cancer group, cocktail HPV genotypes were detected in 60 (46.5%) archived tissue blocks. Of these, genotypes 16 (55.5%), 18 (58.4%), 31 (65.0%) and 33 (26.6%) were detected. Mixed HPV genotypes 16 + 18, 16 + 18 + 31, 16 + 18 + 33, 18 + 33, 16 + 31 and 18 + 31 were found in 5.0%, 25.0%, 8.3%, 7.7%, 10.0% and 13.3% of cancer cases respectively. Only 3 benign breast tumour tissues (12.5%) and none of the healthy breast tissue specimens were HPV-DNA-positive. The detection of high-oncogenic HPV genotypes in patients with breast cancer supports the hypothesis of an etiologic role for the virus in breast cancer development.

DNA proliferative index as a marker in Iraqi aneuploid mammary carcinoma.

This study estimated nuclear DNA ploidy and DNA proliferative indices (PI) in mammary ductal carcinomas from 120 Iraqi female patients. Of the examined specimens, 82.7% were aneuploid. DNA ploidy correlated significantly with histological grade and estrogen receptor content of the primary neoplasm. In aneuploid carcinomas, high PI showed a clearer association than aneuploidy with menopausal status and progesterone receptor content of the tumour. PI and percentage aneuploidy were higher in larger tumours; nodal status showed no association with these cytometric findings. Using PI, patients classified as having Auer aneuploid carcinomas can be divided into subsets with different tumour characteristics, thus improving the selection of those whose high risk, node-negative presentation makes them candidates for adjuvant systemic therapy.

Colposcopy, cervical cytology and human papillomavirus detection as screening tools for cervical cancer.

A cohort of 77 women referred for routine screening or investigation of Pap test abnormality underwent colposcopic examination. Pap-stained liquid-based preparations were diagnosed and categorized according to the Bethesda system. Residual material on the sampling device was used to detect high-risk oncogenic human papillomavirus DNA. Although the colposcopic failure rate was higher than that of cytology, no lesion was missed when both methods were used together. High-risk types were recorded in 24% of patients with atypical squamous cells of undetermined significance, 45% with low-grade squamous intraepithelial lesions and 79% with high-grade squamous intraepithelial lesions--indicating that the efficacy of cytological screening can be improved by papillomavirus detection.

Assessment of response to tamoxifen among Iraqi patients with advanced breast cancer.

Eighty-eight women presenting with locally advanced or metastatic breast cancer were treated with tamoxifen alone. Estrogen and progesterone receptors (ER and PR) were immunocytochemically analysed in mammary tumour cells obtained by fine needle sampling from 73 patients. Of the breast carcinomas, 34.2% were ER+/PR+ and 43.8% were ER-/PR-. The ER+ content increased with age in postmenopausal women. After tamoxifen treatment objective remission occurred in 39.7% of the women. The overall response rate was 53.3% in the ER+/PR- group and 73.1% in the ER+/PR+ group. However, the response elicited in a case of the ER-/PR- phenotype justified the randomized use of tamoxifen among patients in Iraq where the necessary requirements for hormone receptor assessment are almost unavailable.

Flow cytometric DNA analysis of oral squamous cell carcinoma in Iraqi patients.

We studied the DNA content, DNA index and cell cycle parameters that are reliable markers for assessing the proliferative activity and aggressiveness of malignancies. Cytometric DNA analysis was performed on formalin-fixed paraffin embedded sections from 36 Iraqi patients with oral squamous cell carcinoma. The results showed that 20 of 36 cases (55.5%) were diploid, while 15 cases (41.7%) were aneuploid. Significantly higher S-phase fractions and higher DNA indices characterized aneuploid tumours. Nuclear DNA analysis as part of the evaluation of oral squamous cell carcinoma will influence the selection of appropriate treatment strategies.

Detection and genotyping of human papillomavirus in breast cancer tissues from Iraqi patients

أشارت الدراسات إلى احتمال وجود ارتباط بين مسببات سرطان الثدي وبين العدوى بفيروس الورم الحليمي البشري. وقد استخدم الباحثون في هذه الدراسة التهجن في الموضع لكشف التكرار والنمط الجيني لفيروس الورم الحليمي البشري في عينات نسيجية أخذت من 129 مريضة شخص لديها سرطان خبيث في الثدي، إلى جانب 24 مريضة شخص لديها ورم سليم في الثدي و 20 سيدة كشواهد يتمتعن بالصحة. وكشف الباحثون لدى فريق المصابات بسرطان الثدي أنماطا مزيجة من فيروس الورم الحليمي البشري في 60 قطعة نسيجية محفوظة [46.5 %]. ومن بين هذه القطع النسيجية كشف الباحثون النمط الجيني 16 في [55.5 %]، والنمط الجيني 18 في [58.4 %]، والنمط الجيني 31 في [65.0 %]، والنمط الجيني 33 في [26.6 %]من الحالات. كما وجد بين حالات السرطان أنماط جينية مزيجة لفيروس الورم الحليمي البشري 16+18 في 5% من الحالات، و16+18+31 في 25.0% من الحالات، و16+18+33 في 8.3% من الحالات، و18+33 في 6.7% من الحالات و16+31 في 10% من الحالات و18+31 في 13.3% من الحالات المصابة بالسرطان ولم تكن سوى 3 عينات من نسيج الثدي المصابة بورم سليم إيجابية لدنا فيروس الورم الحليمي البشري [12.5 %]، ولم يكن هناك أي عينة من نسج الثدي السليمة إيجابية له.إن كشف الأنماط الجينية لفيروس الورم الحليمي البشري ذات التوليد العالي للورم لدى مريضات بسرطان الثدي يدعم نظرية أداء الفيروس لدور سببي في إحداث سرطان الثدي

ABSTRACT Studies have suggested a possible link between breast cancer pathogenesis and human papillomavirus (HPV) infection. This study in Iraq used in situ hybridization to detect the frequency and genotyping of HPV in tissue specimens from 129 patients diagnosed with malignant breast cancer, 24 with benign breast tumours and 20 healthy controls. In the breast cancer group, cocktail HPV genotypes were detected in 60 (46.5%) archived tissue blocks. Of these, genotypes 16 (55.5%), 18 (58.4%), 31 (65.0%) and 33 (26.6%) were detected. Mixed HPV genotypes 16 + 18, 16 + 18 + 31, 16 + 18 + 33, 18 + 33, 16 + 31 and 18 + 31 were found in 5.0%, 25.0%, 8.3%, 7.7%, 10.0% and 13.3% of cancer cases respectively. Only 3 benign breast tumour tissues (12.5%) and none of the healthy breast tissue specimens were HPV-DNA-positive. The detection of high-oncogenic HPV genotypes in patients with breast cancer supports the hypothesis of an etiologic role for the virus in breast cancer development.

RÉSUMÉ Des études ont suggéré qu'un lien était possible entre la pathogénèse du cancer du sein et l'infection à papillomavirus humain. L'étude menée en Iraq a utilisé la méthode d'hybridation in situ pour déterminer la fréquence du papillomavirus humain et pour son génotypage dans les échantillons de tissus prélevés auprès de 129 patientes ayant reçu un diagnostic de cancer du sein malin, de 24 patientes porteuses d'une tumeur du sein bénigne et de 20 femmes témoins en bonne santé. Dans le groupe des patientes atteintes d'un cancer du sein, différents génotypes de papillomavirus humain ont été détectés dans 60 échantillons de tissus conservés (46,5 %). Parmi ceux-ci, on peut citer les génotypes 16 (55,5 %), 18 (58,4 %), 31 (65,0 %) et 33 (26,6 %). Les associations de génotypes de papillomavirus humain 16 + 18,16 + 18 + 31, 16 + 18 + 33, 18 + 31, 16 + 31 et 18 + 33 ont été observées chez 5,0 %, 25,0 %, 8,3 %, 6,7 %, 10,0 % et 13,3% des cas de cancer respectivement. Seuls trois échantillons de tissu mammaire tumoral bénin (12,5 %) étaient positifs pour l'ADN de papillomavirus humain tandis qu’aucun échantillon de tissu mammaire sain ne l’était. La détection de génotypes du papillomavirus humain hautement oncogènes chez les patientes atteintes de cancer du sein vient appuyer l'hypothèse du rôle étiologique du virus dans l'apparition d'un cancer du sein.

Fine needle aspiration cytology versus histopathology in diagnosing lymph node lesions

Fine needle aspirates [FNA] of superficial lymph nodes were obtained from 150 patients complaining of lymphadenopathy. Cytological findings were analysed in correlation with the corresponding histopathological diagnosis of the same excised nodes. Benign lesions were found in more than half of the patients [55.3%], the majority of which were nonspecific reactive hyperplasia followed by tuberculous lymphadenitis. Lymphomas constituted the main pathology in malignant involvement [26.0%], while metastatic lesions formed 16.7% and leukaemia 2.0%. The results of FNA compared favourably with those of tissue biopsies, with an accuracy rate of 89.6% for malignant lymphadenopathy. The appropriate use of FNA may obviate the need for an open biopsy

Colposcopy, cervical cytology and human papillomavirus detection as screening tools for cervical cancer

A cohort of 77 women referred for routine screening or investigation of Pap test abnormality underwent colposcopic examination. Pap-stained liquid-based preparations were diagnosed and categorized according to the Bethesda system. Residual material on the sampling device was used to detect high-risk oncogenic human papillomavirus DNA. Although the colposcopic failure rate was higher than that of cytology, no lesion was missed when both methods were used together. High-risk types were recorded in 24% of patients with atypical squamous cells of undetermined significance, 45% with low-grade squamous intraepithelial lesions and 79% with high-grade squamous intraepithelial lesions-indicating that the efficacy of cytological screening can be improved by papillomavirus detection

DNA proliferative index as a marker in Iraqi aneuploid mammary carcinoma

This study estimated nuclear DNA ploidy and DNA proliferative indices [PI] in mammary ductal carcinomas from 120 Iraqi female patients. Of the examined specimens, 82.7% were aneuploid. DNA ploidy correlated significantly with histological grade and estrogen receptor content of the primary neoplasm. In aneuploid carcinomas, high PI showed a clearer association than aneuploidy with menopausal status and progesterone receptor content of the tumour. PI and percentage aneuploidy were higher in larger tumours; nodal status showed no association with these cytometric findings. Using PI, patients classified as having Auer aneuploid carcinomas can be divided into subsets with different tumour characteristics, thus improving the selection of those whose high risk, node-negative presentation makes them candidates for adjuvant systemic therapy

Flow cytometric DNA analysis of oral squamous cell carcinoma in Iraqi patients

We studied the DNA content, DNA index and cell cycle parameters that are reliable markers for assessing the proliferative activity and aggressiveness of malignancies. Cytometric DNA analysis was performed on formalin-fixed paraffin embedded sections from 36 Iraqi patients with oral squamous cell carcinoma. The results showed that 20 of 36 cases [55.5%] were diploid, while 15 cases [41.7%] were aneuploid. Significantly higher S-phase fractions and higher DNA indices characterized aneuploid tumours. Nuclear DNA analysis as part of the evaluation of oral squamous cell carcinoma will influence the selection of appropriate treatment strategies

Assessment of response to tamoxifen among Iraqi patients with advanced breast cancer

Eighty-eight women presenting with locally advanced or metastatic breast cancer were treated with tamoxifen alone. Estrogen and progesterone receptors [ER and PR] were immunocytochemically analysed in mammary tumour cells obtained by fine needle sampling from 73 patients. Of the breast carcinomas, 34.2% were ER+/PR+ and 43.8% were ER-/PR-. The ER+ content increased with age in postmenopausal women. After tamoxifen treatment objective remission occurred in 39.7% of the women. The overall response rate was 53.3% in the ER+/PR- group and 73.1% in the ER+/PR+ group. However, the response elicited in a case of the ER-/PR- phenotype justified the randomized use of tamoxifen among patients in Iraq where the necessary requirements for hormone receptor assessment are almost unavailable