Bone Marrow Oxalosis in a Patient With Pancytopenia Following Bilateral Nephrectomy

No abstract available.

Utilidad del estudio microscópico de medula ósea en pacientes con infección por VIH y pancitopenia / Usefulness of bone marrow microscopic examination in HIV-infected patients with pancytopenia

Introducción: El papel del examen de la medula ósea, en el diagnóstico de fiebre prolongada en pacientes con infección por VIH, ha sido bien establecido, pero aún no está bien estudiada la importancia de la información morfológica y etiológica obtenida en el subgrupo de pacientes con pancitopenia coexistente. Material y métodos: En un estudio prospectivo reclutamos 31 pacientes con infección por VIH, con pancitopenia coexistente, con o sin fiebre. Se llevó a cabo en todos los casos el exámen microscópico de la médula ósea, además de otros estudios para concretar un diagnóstico específico. Resultados: La infección por Parvovirus correspondió a cinco casos, Histoplasma capsulatum cuatro casos, Mycobacterium tuberculosis dos casos, complejo Mycobacterium avium tres casos, VIH en tres casos, Salmonella typhi dos casos, sin agente aislado y neumonía en dos casos, sin agente aislado e infección intestinal en dos casos. Hubo un solo caso de cada una de las siguientes etiologías: Citomegalovirus, trimetoprim-sulfametoxazol, Enfermedad de Hodgkin, hiperesplenismo, Acinetobacter, sin agente aislado y apendicitis por Escherichia coli, y síndrome hemofagocítico. Se logró el diagnóstico más probable mediante el análisis microscópico de la medula ósea en 12 de 31 pacientes (38.7%). Conclusión: En este subgrupo de pacientes, el análisis microscópico de la medula ósea es un procedimiento apropiado, que permite además, un diagnóstico temprano en pacientes con y sin episodios febriles.

INTRODUCTION: The role of bone marrow examination in the diagnosis of prolongedfever in HIV infected patients, has been well established, but the importance of the morphological and etiological analysis, obtained in patients with coexisting pancytopenia, has not been adequately described. MATERIALS AND METHODS: In a prospective study, we recruited 31 HIV-infected patients with coexisting pancytopenia, with or withoutfever. Bone marrow examination was performed in all cases. Other studies were done to confirm diagnosis. RESULTS: Parvovirus infection was observed in 5 patients, Histoplasma capsulatum in 4, Mycobacterium tuberculosis in 2, Mycobacterium avium complex in 3, HIV in 3, Salmonella typhi in 2, pneumonia and an unknown agent in 2 and intestinal infection and an unknown agent in 2. Only one patient was included in the following diagnostic etiologies: cytomegalovirus, trimethoprim sulfamethoxazole, Hodgkin's disease, hypersplenism, acinetobacter, appendicitis with an unknown agent, E. coli, and hemophagocytic syndrome. We obtained a probable diagnosis in 12 out of 31 patients (38.7), using bone marrow examination. CONCLUSION: In this subgroup of patients, the microscopic analysis of bone marrow is an important clinical approach that can lead to an early diagnosis of patients with and without fever.

Erythrophagocytosis by Myeloid Cells in a Patient with Myeloproliferative Disorder

This report documents a case of myeloid erythrophagocytosis in a patient with myeloproliferative disorder. The patient had pancytopenia and his marrow was hyperplastic with erythrophagocytosis by myeloid cells of various stages, including myeloblasts. He was diagnosed to have a prefibrotic stage of chronic idiopathic myelofibrosis. The erythrophagocytosis by myeloid cells persisted even after 2 months of treatment for the primary disorder.

Carcinocythemia in a patient with rhabdomyosarcoma

Solid tumor cells are rarely seen in peripheral blood smears. When this occurs the term carcinocythemia is used. This report describes an 18 years old female who presented with a painless lump in the labia majora associated with pancytopenia. Tumor cells were identified int he peripheral blood smear and the bone marrow aspirate showed a predominant population of small round vacuolated primitive cells, many of which formed clumps of varying sizes. Biopsies of the vulvar mass and bone marrow were interpreted as alveolar rhabdomyosarcoma. Review of the literature revealed 12 previously reported cases in whom carcinocythemia had been documented; rhabdomyosarcoma was the specific cell type involved in only two of these. The median time between detection of the leukemic phase of the tumor and death was 8.5 weeks, reflecting the fact that carcinocythemia, when it occurs, represents the terminal event of the disease. To our knowledge, our case is the third well documented case of rhabdomyosarcoma in leukemic phase so far reported. The clinical evolution as well as the management of this patient will be described in detail along with a review of the partinent available literature