Ajay K. Malik

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Vascular endothelial growth factor (VEGF) is a principal regulator of blood vessel formation and haematopoiesis, but the mechanisms by which VEGF differentially regulates these processes have been elusive. Here we describe a regulatory loop by which VEGF controls survival of haematopoietic stem cells (HSCs). We observed a reduction in survival, colony(More)
Hypertrophic pachymeningitis is extremely rare. It is a fibrosing inflammatory process which involves the dura mater, including the tentorium. Numerous pathological entities produce thickening of the pachymeninges, so that idiopathic hypertrophic pachymeningitis is a diagnosis of exclusion. We describe four patients with idiopathic hypertrophic(More)
BACKGROUND Malignant peripheral nerve sheath tumor (MPNST) is biologically an aggressive tumor for which the treatment of choice is the surgery. We reviewed the clinical profile, diagnostic methods, treatment patterns, and outcome of twenty-four MPNST patients in this study. PATIENTS AND METHODS A retrospective analysis of 24 MPNST patients, treated from(More)
Inflammatory myofibroblastic tumor is a biologically distinct neoplasm of intermediate grade, which can affect every possible tissue of the human body. It is a 'masquerading tumor' as the presenting complaints vary with the affected site. Occurrence of this tumor as an orbital mass is rare and is challenging for both the clinician as well as the(More)
A 50-year-old man was admitted with complaints of difficulty in walking, urinary incontinence, and a lump over the lumbosacral region. X-ray examination of the lumbosacral spine revealed bizarre vertebral anomalies, including a hole in the L-5 vertebral body. At operation an enterogenous cyst in association with diastematomyelia, cutaneous fistula, and a(More)
Enteric protozoan parasites remain the most commonly encountered parasitic diseases in HIV infected patients. Opportunistic protozoal infections that infect GIT most commonly and cause diarrhea in HIV-infected patients are cryptosporidium parvum, microsporidia and Isospora belli. Developing an infection with enteric protozoan parasites is dependent on(More)
Annular elastolytic giant cell granuloma initially described by O'Brien in 1975 is a disorder of uncertain etiopathogenesis presenting with annular erythematous plaques predominantly on the sun-exposed areas. Hisptopathologically, it is characterized by elastin degenration, multinucleate giant cells, and elastophagocytosis. The authors came across 10 such(More)
Adult granulosa cell tumor is often a hormonally active stromal cell neoplasm of the ovary with malignant potential. Intra-operative pathological assessment is a valuable tool in guiding optimal surgical treatment in patients. Of the various intra-operative cytological diagnostic modalities, scrape smear cytology is an effective, economical, simple, fast(More)
Aggressive angiomyxoma (AA) is an uncommon tumor occurring in females and is rarely reported in males with propensity to recur. Due to its presence in perineal and genital region, it has to be differentiated from other myxoid neoplasms. The tumor expresses estrogen and progesterone receptors, which may have a role to play in tumor therapy. Wide local(More)
UTI is a common infection in community, more common in sexually active women. Now a days incidence of infection by multidrug resistant uropathogens is increasing worldwide. Consequently, area specific monitoring studies to document the microorganisms causing UTIs and their antimicrobial susceptibility is mandatory for helping the selection of an effective(More)