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Dive into the research topics where Kaleem Rizvon is active.

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Featured researches published by Kaleem Rizvon.


Case Reports in Gastroenterology | 2012

Transient Psychotic Episode Induced by Helicobacter pylori Triple Therapy Treatment.

Mitanshu Shah; Miral Subhani; Kaleem Rizvon; Paul Mustacchia

The term ‘antibiomania’ refers to manic episodes that occur after a patient starts taking antibiotics. We report the case of a 49-year-old male who developed acute psychosis secondary to initiation of triple therapy for Helicobacter pylori eradication. Unlike with proton pump inhibitors, there have been several reported cases of central nervous system side effects and psychiatric consequences due to amoxicillin, however evidence points to clarithromycin as the likely culprit. On average onset of symptoms occurred within 1–5 days of initiating therapy. In all cases, symptoms resolved upon cessation of clarithromycin, mostly within 1–3 days. Unfortunately, the mechanism through which clarithromycin causes neurotoxicity remains unclear. Clinicians should be cognizant of psychiatric side effects secondary to clarithromycin, and discontinuation should be prompt for rapid recovery of mental status.


Case Reports | 2012

Gastrobronchial fistula following laparoscopic sleeve gastrectomy.

Albin Abraham; Ravi Virdi; Dhyan Rajan; Jaspreet Singh; Paul Mustacchia; Javed Iqbal; Kaleem Rizvon

Acquired fistulas between the tracheobronchial tree and the gastrointestinal tract are rare but serious complications of laparoscopic sleeve gastrectomies with significant morbidity and mortality. With the rising popularity and widespread acceptance of bariatric surgery techniques, the occurrence of gastrobronchial fistulas is being increasingly recognised. We present the case of a 26-year-old woman who underwent laparoscopic sleeve gastrectomy for morbid obesity and presented later with a history of chronic productive cough. Upper gastrointestinal series showed the presence of a communicating fistula between the stomach and the lung, with extravasation of contrast into the lung. The aim of this paper is to highlight the importance of considering the diagnosis of a gastrobronchial fistula in cases of persistent respiratory infections in the postoperative period following bariatric surgery and to review its incidence, clinical manifestations and treatment.


Obesity Surgery | 2008

Intra-Gastric Band Erosion from an Un-inflated Lap-Band: A Case Report

L.D. George Angus; Kaleem Rizvon; Dahua Zhou; Eric Seitelman; Supriya Cardoza

The increasing prevalence of morbid obesity is of public health concern throughout the world, and surgical intervention seems to offer the only long-term solution to the problem. Gastric banding is one of the available options in the bariatric armamentarium. As more Lap-Bands are being inserted, intragastric erosion is increasingly being encountered as a major complication. The case of a 40-year-old man with intra-gastric band erosion is presented with the band never having been inflated, suggesting that additional factors may play a role in the development of erosions. The presentation, diagnostic modalities, and pathognomomic findings are discussed.


Case reports in gastrointestinal medicine | 2012

Successful Management of a Gastric Sleeve Leak with an Endoscopic Stent

Albin Abraham; Kaleem Rizvon; Jaspreet Singh; Ghulam Siddiqui; Apsara Prasad; Sadat Rashid; Magdalene Vardaros; Vikas Garg; Krishnaiyer Subramani; Paul Mustacchia

Laparoscopic sleeve gastrectomy has been a recently developed technique for treating morbid obesity. Gagner and Patterson performed the first laparoscopic sleeve gastrectomy as part of a duodenal switch procedure at Mount Sinai Hospital in New York in 1999. Since then many surgeons and institutions have adopted this technique. One of the most dreaded complications of sleeve gastrectomy is a leak along the staple line. We present the case of a 23-year-old female with gastric sleeve leak managed successfully with a fully covered wall flex stent. Our aim is to examine the incidence, causes, classification, and presentation of gastric sleeve leaks and to evaluate the use of endoscopic stents in its management.


International Scholarly Research Notices | 2011

Colonic Metastases from Pleomorphic Carcinoma of the Lung Presenting as an Ileocecal Intussusception

Sadat Rashid; Dhyan Rajan; Robin Jacob; Keith Dahl; Apsara Prasad; Jaspreet Singh; Ghulam Siddiqui; Venkatesh Sasthakonar; Lester Freedman; Wondwoosen Gebre; Umeko Takeshige; Krishnaiyer Subramani; Kaleem Rizvon; Paul Mustacchia

Pleomorphic carcinoma is a rare aggressive type of lung cancer that uncommonly metastasizes to the bowel, leading to bleeding, perforation, obstruction, and rarely intussusception. Serving as a lead point, metastatic lesions in the bowel may precipitate intussusception and require immediate surgical intervention. We present a rare case of colonic metastases from a primary lung malignancy, causing ileocecal intussusception in a 57-year old male.


Case Reports in Gastroenterology | 2012

Endoscopic management of a primary duodenal carcinoid tumor.

Albin Abraham; Jaspreet Singh; Ghulam Siddiqui; Apsara Prasad; Sadat Rashid; Magdalene Vardaros; Vikas Garg; Kaleem Rizvon; Krishnaiyer Subramani; Paul Mustacchia

Carcinoids are rare, slow-growing tumors originating from a variety of different neuroendocrine cell types. They are identified histologically by their affinity for silver salts and by positive reactions to neuroendocrine markers such as neuron-specific enolase, synaptophysin and chromogranin. They can present with various clinical symptoms and are difficult to diagnose. We present the case of a 43-year-old woman who was referred for evaluation of anemia. Upper endoscopy showed a duodenal bulb mass around 1 cm in size. Histopathological and immunohistochemistry staining were consistent with the diagnosis of a carcinoid tumor. Further imaging and endoscopic studies showed no other synchronous carcinoid lesions. Endoscopic ultrasound (EUS) revealed a 1 cm lesion confined to the mucosa and no local lymphadenopathy. Successful endoscopic mucosal resection of the mass was performed. Follow-up surveillance 6 months later with EUS and Octreoscan revealed no new lesions suggestive of recurrence. No consensus guidelines exist for the endoscopic management of duodenal carcinoid tumors. However, endoscopic resection is safe and preferred for tumors measuring 1 cm or less with no evidence of invasion of the muscularis layer.


Case Reports in Gastroenterology | 2012

Blastocystis hominis and Endolimax nana Co-Infection Resulting in Chronic Diarrhea in an Immunocompetent Male.

Mitanshu Shah; Christopher B. Tan; Dhyan Rajan; Shadab Ahmed; Krishnaiyer Subramani; Kaleem Rizvon; Paul Mustacchia

Blastocystis hominis and Endolimax nana exist as two separate parasitic organisms; however co-infection with the two individual parasites has been well documented. Although often symptomatic in immunocompromised individuals, the pathogenicity of the organisms in immunocompetent subjects causing gastrointestinal symptoms has been debated, with studies revealing mixed results. Clinically, both B. hominis and E. nana infection may result in acute or chronic diarrhea, generalized abdominal pain, nausea, vomiting, flatulence and anorexia. We report the case of a 24-year-old immunocompetent male presenting with chronic diarrhea and abdominal pain secondary to B. hominis and E. nana treated with metronidazole, resulting in symptom resolution and eradication of the organisms. Our case illustrates that clinicians should be cognizant of both B. hominis and E. nana infection as a cause of chronic diarrhea in an immunocompetent host. Such awareness will aid in a timely diagnosis and possible parasitic eradication with resolution of gastrointestinal symptoms.


World Journal of Clinical Cases | 2014

Rectal ulcers and massive bleeding after hemorrhoidal band ligation while on aspirin

Shruti Patel; Ghulamullah Shahzad; Kaleem Rizvon; Krishnaiyer Subramani; Prakash Viswanathan; Paul Mustacchia

Endoscopic hemorrhoidal band ligation is a well-established nonoperative method for treatment of bleeding internal hemorrhoids (grade 1 to 3). It is a safe and effective technique with a high success rate. Complications with this procedure are uncommon. Although rectal ulceration due to band ligation is a rare complication, it can cause life-threatening hemorrhage especially when patients are on medications which impair hemostasis like aspirin or non steroidal anti-inflammatory drugs. We present 2 cases of massive lower gastro-intestinal bleeding in patients who had a band ligation procedure performed 2 wk prior to the presentation and were on aspirin at home. Both the patients were hemodynamically unstable requiring resuscitation. They required platelet and blood transfusions and were found to have rectal ulcers on colonoscopy done subsequently. The rectal ulcers corresponded to the site of band ligation. The use of aspirin by these patients would have caused defects in the hemostasis and may have predisposed them to massive bleeding in the presence of rectal ulcers occurring after the band ligation procedure. Managing aspirin before and after the ligation may be difficult especially since adequate guidelines are unavailable. Stopping aspirin in all the cases might not be safe and the decision should be individualized.


Journal of Gastrointestinal Cancer | 2013

A Case of Gastrointestinal Bleeding due to Duodenal Metastasis from a Testicular Choriocarcinoma

Magdalene Vardaros; Miral Subhani; Kaleem Rizvon; Vladimir K. Gotlieb; Paul Mustacchia; Lester Freedman; Vikas Garg; Jaspreet Singh; Ghulam Siddiqui

Testicular cancers are the most common malignant neoplasm in men aged 15–35, but only constitute 1 % of cancers in males overall with an incidence of 2.1 cases per 100,000 males and four times greater incidence in white males than in black males [1–3]. Testicular tumors usually present as a nodule or painless swelling of one testicle, which may be noted incidentally by the patient or by his sexual partner [4]. Typically, the patients chief complaint includes acute testicular pain or heaviness in the lower abdomen. Signs or symptoms of metastatic disease are the initial implication of testicular cancer in approximately 10 % of patients. The most common sites of extragonadal disease are the retroperitoneum, lungs, and liver [5–8]. Only rarely (5 % of cases) are metastases found in the gastrointestinal tract [9]. We report a case of testicular mixed germ cell tumor with metastasis of pure choriocarcinoma involving the small intestine.


Diagnostic and Therapeutic Endoscopy | 2012

Endoscopic Evaluation of Symptomatic Patients following Bariatric Surgery: A Literature Review

Miral Subhani; Kaleem Rizvon; Paul Mustacchia

Obesity is an epidemic in our society, and rates continue to rise, along with comorbid conditions associated with obesity. Unfortunately, obesity remains refractory to behavioral and drug therapy but has shown response to bariatric surgery. Not only can long-term weight loss be achieved, but a majority of patients have also shown improvement of the comorbid conditions associated with obesity. A rise in the use of surgical therapy for management of obesity presents a challenge with an increased number of patients with problems after bariatric surgery. It is important to be familiar with symptoms following bariatric surgery, such as nausea/vomiting, abdominal pain, dysphagia, and upper gastrointestinal bleeding and to utilize appropriate available tests for upper gastrointestinal tract pathology in the postoperative period.

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Paul Mustacchia

Nassau University Medical Center

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Jaspreet Singh

Nassau University Medical Center

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Lester Freedman

Nassau University Medical Center

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Seth Lipka

University of South Florida

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Ghulam Siddiqui

Nassau University Medical Center

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Apsara Prasad

Nassau University Medical Center

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Krishnaiyer Subramani

Nassau University Medical Center

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Dhyan Rajan

Nassau University Medical Center

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Miral Subhani

Nassau University Medical Center

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Sadat Rashid

Nassau University Medical Center

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