Malignancies Trends in a Hispanic Cohort of HIV Persons in Puerto Rico before and after cART.

BACKGROUND: The study describes the cancer trends in a Puerto Rican Hispanic HIV/AIDS cohort for three different time periods as defined by the availability of combination antiretroviral therapy (cART) in the Island: pre (1992-1995), early (1996-2002, and recent (2003-2009). METHODS: AIDS and non-AIDS related malignancies risk, standardized incidence rate and one year mortality was evaluated in the cohort before and after cART. RESULTS: Of the 281 malignancies found in 265 persons; 72% were in men, 38% in injecting drug users and 42.3% were AIDS related cancers. AIDS related cancer standardized incidence rates decreased significantly in the cART eras; however, Kaposi's sarcoma and invasive cervical carcinoma incidence remained significantly higher in the cohort when compare to the general population. On the contrary, non-AIDS related cancer standardized incidence rates increased significantly in the cART eras, specifically those of the oral/cavity/pharynx, liver, anus, vaginal, and Hodgkin's and non-Hodgkin's Lymphomas. Around 50% of the persons with cancers were reported dead within the first year of their diagnoses without a significant variation during the cART eras. CONCLUSION: The higher incidence of Kaposi's sarcoma, invasive cervical carcinoma and non-AIDS related malignancies and their high mortality in the cART eras is suggestive of the role of oncogenic viruses, environmental agents, risky lifestyle behaviors and inadequate cancer prevention efforts that contribute and accelerate the risk of malignant transformation in these subjects. Aggressive intervention in the form of vaccines, risky practice reduction, early screening, early treatment and adequate risk reduction education needs to be incremented in this vulnerable population.

Barriers for Compliance to Breast, Colorectal, and Cervical Screening Cancer Tests among Hispanic Patients.

Hispanics are less likely to undergo screening tests for colorectal cancer and cervical cancer than non-Hispanic whites. Compliance with mammography, fecal occult blood testing (FOBT), colonoscopy, and cervical smears (PAP) and barriers for compliance were studied. A descriptive study was performed with 194 ambulatory patients while they attended routine medical visits. Women are more likely than men to undergo a colonoscopy. Conversely, FOBT was most likely reported by men. Reasons for compliance with FOBT differed by gender. Men were most likely to avoid FOBT due to lack of knowledge whereas women reported that physicians do not recommend the procedure. Both men and women reported that lack of physician's recommendation was their primary reason for not undergoing a colonoscopy. Men tend to report lack of knowledge about colonoscopy procedure. A higher mammogram utilization rate was reported by women older than 40 years. PAP smears were reported by 74% of women older than 21 years. The major reasons for avoiding mammography and PAP tests were having a busy schedule, fear, and feeling uncomfortable during the procedure. In a multivariate regression analysis, occupational status was found to be a predictor for compliance with FOBT and colonoscopy.

K-RAS mutation profile in Puerto Rican patients with colorectal cancer: trends from April 2009 to January 2011.

The frequency of K-RAS mutations ranges between 30% and 48% among the Caucasian, Asian, and European populations and these mutations are predictors of response to EGFR therapies. We sought to determine the expression of K-RAS gene mutations among colorectal cancer patients in PuertoRico. A retrospective study was conducted to determine the expression of mutant K-RAS among colorectal cancer patients in Puerto Rico between April 2009 and January 2011. The mutant expression of K-RAS was found in 39% (n=195) of the Puerto Rican population, and was more common in the age group of 51-69 years (53.8%) and in males (55.4%, p>0.05). Moreover, mutant K-RAS was more commonly found in tumors of the proximal area (43.8%; p=0.03), with distant metastasis (43.3%, p=0.018), with a mucinous histotype (31.7% p>0.05), and in ulcerated tumors (38.8%, p>0.05). K-RAS mutations were observed on codon 12 (87.7%) and codon 13 (12.3%). The most frequent mutation on codon 12 was 12 ASP (39.5%), followed by 12 VAL (25.4%) that is associated with a significant decrease in overall cancer survival. The mutant expression of K-RAS in cases of rectum carcinoma was 39.5%, where the most common mutation was 12 VAL (37.5%). The frequency of K-RAS mutations in the Puerto Rican population here studied was 39% and mutant K-RAS was associated with advanced colorectal cancer stage, mucinous histotype, and ulcerated tumors.

Profile of Puerto Rican HIV/AIDS patients with early and non-early initiation of injection drug use.

BACKGROUND: Early initiation of injection drug use (IDU) increases the risk of HIV infection. METHODS: We compare the sociodemographic, psychosocial, and clinical profiles of HIV-positive IDU patients according to the age at which IDU was initiated. This is a cross-sectional study of 1308 patients seen from 1992 through 2005. We compared the profile of patients with early (age < 13 years) vs non-early (age > 13 years) initiation of IDU. The Fisher and chi2 differences in proportions were performed to assess difference among study groups with earlier IDU. The Mantel-Haenszel test was used to calculate the odds ratio. The Kaplan-Meier and log rank tests were used to assess the median survival. Differences were considered significant at alpha = .05. RESULTS: Early initiation of IDU was reported in 11% of our sample. The early initiation group was more likely to smoke tobacco, use alcohol, attempt suicide, have a history of incarceration, have economic problems, and have episodes of anxiety, confusion, depression, excitation, impulsivity, and violence (P < .05). The general survival time of patients was 36.9 months (95% confidence interval 31.9-42.0). A higher prevalence of candidial esophagitis and Pneumocystis jirovecii pneumonia and a lower prevalence of hepatitis C virus coinfection were seen in the early initiation group (P < .05). No differences in mortality, use of antiretroviral therapy, or CD4 T-cell count were seen. CONCLUSIONS: Differences in terms of lifestyle, stress factors, and history of psychological events were seen in the group of patients with early initiation of IDU seen in our facilities. Differences in the clinical scenario were documented.

Changes in profile and colorectal cancer stage over 15 years in Puerto Rico.

INTRODUCTION: The stage of a malignant tumor defines how advanced the malignant process is at the time of diagnosis. In many clinical scenarios it is an indirect measurement of the efficacy of screening interventions used for early detection. We have evaluated changes in the tumor-node-metastasis (TNM) stage of colorectal cancer across a 15-year period. METHODS: This was a retrospective study in which all patients who underwent colorectal cancer surgery at the HIMA San Pablo Medical Center in 1988-1990 (period 1) and 2002-2004 (period 2) had their pathological report examined. The TNM stage for all patients was examined by using standard criteria. RESULTS: A total of 285 patients were evaluated: 108 in period 1 and 177 in period 2. The number of patients > 71 years of age who underwent colon surgery increased (33% vs 46%). An increase in patients with stage one colon cancer was observed in period 2 (30% vs 10%) with a corresponding decrease in stage 2 and 3 (59% vs 83%). CONCLUSION: The pathologic and demographic profile of patients with colorectal cancer has changed over 15 years. Patients with colon cancer are younger and have an earlier stage of disease with a decrease in lymph node involvement. Patients with rectal cancer were older and more likely to be men.

AIDS-defining neoplasm prevalence in a cohort of HIV-infected patients, before and after highly active antiretroviral therapy.

INTRODUCTION: Malignant disorders have been linked to the HIV epidemic from its onset. Implementation of highly active antiretroviral therapy (HAART) has resulted in a dramatic reduction in the HIV/AIDS morbidity and mortality. The present study evaluates the neoplasm prevalence before and after the implementation of HAART. METHODS: A cross-sectional study was conducted in 171 HIV-infected adults who were followed in Puerto Rico from May 1992 through December 2005. Neoplasm prevalence was measured, and the difference in AIDS- and non-AIDS-defining neoplasms was analyzed before and after the HAART era. Between-group differences were explored by using chi2, Fisher exact test, analysis of variance, and student t test. RESULTS: Malignant neoplasms were detected in 171 patients (4.8%). Of these, 51.5% were AIDS-defining neoplasms, and 68% were established before HAART. AIDS-defining neoplasms accounted for 62.4% of those detected before the availability of HAART and 25.9% of those detected after HAART. Except for cervical carcinoma, the prevalence of AIDS-defining neoplasms decreased after HAART. Non-AIDS lymphomas and prostate neoplasms were more frequent after HAART. DISCUSSION: Our study found a significant reduction of Kaposi sarcoma and AIDS-related lymphoma in the HAART era of the AIDS epidemic. A higher prevalence of non-AIDS-defining lymphomas, prostate carcinoma, and cervical carcinoma was seen in the HAART era. These findings suggest that factors other than severe immunosuppression are involved in the neoplasms' pathogenesis. Preventive strategies that include screening tests, vaccination, and lifestyle modification should be routinely applied in HIV-infected patients.

Mortality trends of HIV-infected patients after the introduction of highly active antiretroviral therapy: analysis of a cohort of 3,322 HIV-infected persons.

INTRODUCTION: The implementation of highly active antiretroviral therapies (HAART) has reduced the mortality attributed to the human immunodeficiency virus (HIV) infection. Variation in the specific causes of death has also changed since the implementation of these therapies. METHODS: A prospective study was performed in 3322 HIV-infected persons enrolled in Puerto Rico between 1992 and 2003. We measured the mortality rates and the causes of death as listed in the death certificate and analyzed the variation as a function of the antiretroviral therapy (ART) use. Statistical analyses were performed to evaluate differences. RESULTS: The study found that persons treated with HAART had significantly lower mortality risk than ART-naïve persons, regardless of gender and the use of injecting drugs. AIDS-defining conditions as a cause of demise were less frequently reported in patients with HAART. Gastrointestinal dysfunction, sepsis, metabolic abnormalities, and non-Kaposi neoplasms were more frequently reported as causes of death in patients treated with HAART. Hepatic failure as cause of death was also more frequent in these patients. The variation in the mortality trends was similar in both genders and according to the presence or absence of intravenous drug use. CONCLUSIONS: Highly active antiretroviral therapies (HAART) is associated with significant reduction in mortality and an increment in gastrointestinal dysfunction, sepsis, non-Kaposi neoplasms, and metabolic disorders as listed causes of death. Adverse and toxic profile of ART, along with the potential synergy of concomitant conditions, may accelerate these trends. Continued mortality surveillance of HIV/AIDS is imperative to follow the epidemic changes.

Changes in the AIDS epidemiologic situation in Puerto Rico following health care reform and the introduction of HAART / Cambios en la situación epidemiológica del sida en Puerto Rico tras la reforma sanitaria y la introducción de la TARGA

Objetivos. Comparar la frecuencia de casos de sida, así como las características sociodemográficas y clínicas de los pacientes de sida en Puerto Rico, antes y después de la introducción de la terapia antirretrovírica de gran actividad (TARGA) y la privatización del sistema de salud de la isla. Métodos. Comparamos los nuevos casos de sida durante dos períodos de tres años, 1992­1994 y 1998­2000, en cuatro poblaciones: 1) todos los Estados Unidos, 2) Puerto Rico, 3) la Región de Salud de Bayamón (que se sitúa en la parte norte del centro de Puerto Rico y contiene 11 de las 78 municipalidades de la isla) y una cohorte de pacientes infectados por el VIH y atendidos en la Escuela de Medicina de la Universidad Central del Caribe (UCC). La UCC está en Bayamón, Puerto Rico, dentro de un complejo médico universitario donde se encuentran el hospital escuela (Hospital Universitario Ramón Ruíz Arnaú), las clínicas ambulatorias (Clínicas de Inmunología) para pacientes infectados por el VIH y los edificios administrativos. Todo ello en conjunto representa la principal infraestructura de atención sanitaria de carácter público en la Región de Salud de Bayamón. Resultados. La frecuencia de nuevos casos de sida se redujo notablemente entre los dos períodos en cada una de las cuatro poblaciones estudiadas. La reducción de 48,1% observada en Puerto Rico superó a la de 40,9% observada en los Estados Unidos en general. La reducción en Puerto Rico obedeció probablemente a la mayor disponibilidad y aplicación de la TARGA y a la provisión de atención sanitaria de manera integrada a pacientes de sida o con infección por el VIH en cada clínica ambulatoria regional. A pesar de estas mejoras, sin embargo, el número absoluto de pacientes de sida en la isla sigue siendo elevado. Hacen falta cuantiosos recursos para proporcionar tratamiento y aplicar medidas de prevención. La proporción de casos de sida nuevos fue menor entre las mujeres, las personas de 40 años de edad o mayores, las personas con menos escolaridad y las que vivían solas. El uso de drogas inyectadas sigue siendo la principal vía de transmisión en Puerto Rico. Conclusiones. En Puerto Rico, cualquier adelanto futuro en la lucha contra el sida dependerá de la capacidad de la isla para reducir la transmisión ocasionada por el uso de drogas inyectadas; de la administración de la TARGA a un gran número de pacientes vulnerables, especialmente a usuarios de drogas intravenosas; de intervenciones educativas para mejorar la observancia del tratamiento en ciertos grupos en riesgo; y de medidas orientadas a reducir la frecuencia del uso de drogas inyectadas

Objectives. To compare the occurrence of AIDS as well as the sociodemographic and clinical profiles of AIDS patients in Puerto Rico before and after the introduction of highly active antiretroviral therapy (HAART) and the privatization of the island's public health care system. Methods. We compared the incident AIDS cases for two three-year periods, 1992­1994 and 1998­2000, in four populations: (1) entire United States, (2) Puerto Rico, (3) Bayamón Health Region (located in north-central Puerto Rico, it includes 11 of the island's 78 municipalities), and (4) an HIV cohort enrolled at the Universidad Central del Caribe (UCC) School of Medicine. The UCC is located in Bayamón, Puerto Rico, within an academic medical complex that houses the teaching hospital (Ramón Ruíz Arnaú University Hospital), the ambulatory health care facilities (Immunology Clinics) for patients with HIV, and administrative buildings. This represents the major government-sponsored health care infrastructure within the Bayamón Health Region. Results. Incident AIDS declined substantially between the two periods in each of the four populations studied. The 48.1% decline in Puerto Rico exceeded the 40.9% decline in the United States. The decline in Puerto Rico likely resulted from increased availability and implementation of HAART and the delivery of health care to HIV/AIDS patients in an integrated fashion within each regional ambulatory clinic. In spite of this improvement, the absolute number of patients with AIDS on the island remains high. Substantial resources for treatment and prevention are required. The proportion of new AIDS cases was lower among women, persons 40 years of age or older, the less educated, and those living alone. Injection drug use remains the predominant mode of transmission in Puerto Rico. Conclusions. Further gains in Puerto Rico's fight against AIDS will depend on the island's ability to reduce the transmission that occurs through injection drug use; the use of HAART on a larger number of vulnerable patients, particularly intravenous drug users; educational interventions to improve medication compliance in certain risk groups; and specific measures aimed at decreasing the rate of injection drug use

Essential thrombocythemia: a hypercoagulable state

Essential thrombocythemia is an entity characterized by clonal proliferation of megakaryocytes and thromboccytosis. We have analyzed the presenting manifestation of 13 patients with Essential Thrombocythemia diagnosed in the last three years. The major findings include the frequent presence of symptomatology of a hypercoagulable state with pro,pt improvement of these symptoms once the thrombocytosis is controlled. Constitutional symptoms, organomegaly, modest Leukocytosis and eosinophillia were also often seen. No catastrophic events were detected with a mean follow up period of 17.5 months