Protective effect of immunodepression on experimental malaria infection.
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Biomedical subjects
Publications and source records attributed to A Bhatia.
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Blood serum collected from female mice treated with oestrogen and progesterone was assayed for its ability to induce acrosome degeneration. The maximum activity was found in serum obtained from females treated with 1.0 mug oestrogen/day for 5 days. Lower doses did not produce any significant difference from the control group. Blood serum from pregnant or ovariectomized females treated with progesterone did not significantly depress the incidence of acrosome degeneration. The possibility that removal of the acrosome may not be a morphological concomitant of capacitation in mice has been discussed.
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One hundred consecutively diagnosed cases of tuberculous lymphadenitis in children have been analysed retrospectively. All cases were stained by May Grunwald Giemsa for cytomorphology and Ziehl Neelsen stain for acidfast bacilli (AFB). In 52 cases the material was sufficient and AFB cultures were possible. A diagnosis of tuberculosis was made when smears showed epithelioid cell granulomas or AFB on either smears or culture. M. tuberculosis and atypical mucobacteria were cultured in 26 and 3 cases respectively. In 6 cases the diagnosis of tuberculosis would have been missed but for culture studies, the cytologic smears were necrotic and stains for AFB negative.
Of 613 children evaluated in a village in Haryana 94 (15.3%) were observed to have chronic suppurative otitis media (CSOM). Fifty eight (61.7%) children had hearing impairment. CSOM contributed to 71.6% of the hearing impaired (58/81). On analysis of association of CSOM with literacy and socio-economic status of mothers, and age, sex, and upper respiratory tract infections (URI) in children positive correlation was observed only with URIs (P < 0.001). Literacy and socio-economic status of the mothers did not correlate significantly with knowledge about treatment seeking, and ear cleaning practices, probably due to the narrow range of incomes and literacy levels. An intervention program consisting of play, demonstrations, health charts and slogans, and aural cleaning and antibiotic drops was introduced.
With the advent of newer adjuvant chemotherapeutic regimes resulting in dramatic improvement in survival, it is mandatory to obtain quick correct diagnosis, which is provided by fine needle aspiration cytology (FNAC). Cytology of childhood tumors was studied to find any distinguishing features, which would help in arriving at a diagnosis. Cytomorphology of 386 childhood and adolescent (0-19 years) tumors diagnosed between 1984 and 1993 were studied. Lipoma was the commonest benign tumor in 0-14 years age group. Fibroadenoma of the breast was the common benign tumor in adolescent (10-19 yrs) girls and pleomorphic adenoma in adolescent (15-19 yrs) boys. Wilms' tumor was the most frequent solid malignant tumor in preschool children and Hodgkin lymphoma, mixed cellularity in the school going age (5-19 yrs). Malignant tumors were more frequent (199). In addition, some rare malignancies like hepatoblastoma, meningioma, ganglioneuroblastoma, adrenocortical carcinoma, clear cell sarcoma kidney and malignant histiocytosis were diagnosed. The cytological features and the differential diagnoses are discussed. It is possible to diagnose these uncommon tumors if particular attention is paid to the distinguishing cytomorphological features in correlation with clinicoradiological findings and cytochemistry.
Abdominal sonography of four infants with pyrexia and hepatomegaly demonstrated multiple hypoechoeic hepatic and splenic foci, guided biopsies of which showed caseating granulomas with acid-fast bacilli. Evidence of tuberculosis in maternal endometrium and its exclusion in the contacts further confirmed a diagnosis of congenital tuberculosis. Clinical suspicion supplemented by careful sonography facilitated early detection and antemortem diagnosis of this potentially fatal disease.
BACKGROUND: Sclerosing lobular hyperplasia presenting as a palpable, circumscribed nodular mass in a young female's breast is characterized histologically by prominent hyperplasia of the lobules and sclerosis of the intralobular connective tissue. The cytomorphologic features and differential diagnosis of the lesion are presented. CASE: A 14-year-old female presented with a painless, progressively increasing, nodular, firm, mobile lump measuring 5 x 5 cm in the right breast. The clinical and radiologic diagnosis was fibroadenoma. Fine needle aspiration smears showed a clean background with uniform, round to oval epithelial cells in flat sheets, round clusters and rosettelike (acinar) arrangements. A few naked nuclei were present, while stromal fragments were not seen. CONCLUSION: When analyzed in the context of the clinical findings, the cytologic features of sclerosing lobular hyperplasia help to differentiate it from other benign palpable nodular lesions of the juvenile breast.
OBJECTIVE: To evaluate qualitative and quantitative cytologic features on testicular fine needle aspiration biopsy in the diagnosis of azoospermia and oligospermia and to correlate cytologic and histologic diagnoses. STUDY DESIGN: In this prospective study, 50 infertile males selected from the infertility clinic of Guru Tegh Bahadur Hospital were studied. Fine needle aspiration cytology (FNAC) smears from both testes of 27 azoospermic and 23 oligospermic patients (sperm count < 10 million per milliliter) were stained with May-Grünwald-Giemsa and Papanicolaou stain. Differential counting of 500 spermatogenic cells was done, and the number of Sertoli cells per 500 germ cells was determined for calculating the spermatic index and Sertoli cell index, respectively. FNAC and testicular biopsy were performed under local anesthesia as a minor surgical procedure. RESULTS: Six groups were identified on FNAC smears from azoospermic patients: I. normal spermatogenesis (8), II. hypospermatogenesis (2), III. maturation arrest (2), IV. Sertoli cells only (6), V. atrophic pattern (7), and VI. Leydig cell predominance (2). In oligospermic patients two groups were identified: I. those with normal spermatogenesis (4), and II. those with subnormal spermatogenesis (19). Correlation with histopathologic examination was seen in 81.5% azoospermic and 65.2% oligospermic patients. CONCLUSION: Qualitative and quantitative evaluation of testicular FNAC provides useful information on both azoospermic and oligospermic patients. FNAC performed under local anesthesia is an acceptable outpatient procedure that consistently yields sufficient diagnostic material in all patients.
BACKGROUND: Extraskeletal myxoid chondrosarcoma is a rare soft tissue tumor of the extremities. Since it usually lacks obvious chondroid differentiation on light microscopy, it needs to be distinguished from other myxoid soft tissue sarcomas. CASE REPORT: The diagnosis of extraskeletal myxoid chondrosarcoma was made on fine needle aspiration in a patient with a swelling in the right calf. Cellular myxoid fragments having round to oval cells with grooved nuclei arranged in a cordlike pattern suggested chondroid differentiation. The diagnosis was confirmed by histopathology. CONCLUSION: Fine needle aspiration cytology can be diagnostic of extraskeletal myxoid chondrosarcoma even in the absence of obvious chondroid differentiation.
OBJECTIVE: To determine the applicability of recognizing cellular reaction patterns in the cytologic diagnosis of granulomatous inflammation of the skin. STUDY DESIGN: Prospective. Two hundred seventeen cases of clinically suspected granulomatous dermatitis formed the data for this study. May-Grünwald-Giemsa, Ziehl-Neelsen, periodic acid-Schiff, silver impregnation and Gram staining methods were employed. RESULTS: Five cytomorphologic patterns of granulomatous inflammation were identified: epithelioid cell granulomas (77), histiocytic granulomas (20), epithelioid cell granulomas with polymorphous exudate (77), foreign body granulomas (3) and fat necrosis with granulomas (9). CONCLUSION: Correlating clinical presentation with cytomorphologic patterns often yields diagnostic information in the workup of granulomatous inflammation of the skin and frequently obviates the need for biopsy.
OBJECTIVE: To define diagnostic cytomorphologic features of reactions in leprosy. STUDY DESIGN: Part-retrospective, part-prospective, single-blind, controlled study of the applicability of fine needle aspiration cytology in the diagnosis of reactions in leprosy. Cytomorphologic features were compared in 42 clinically diagnosed patients with reactions in leprosy with those in a control group of patients with nonreactional leprosy. The study groups included type 1 and type 2 reactions in 35 and 9 patients, respectively. May-Grünwald-Giemsa and Ziehl-Neelsen staining methods were employed. RESULTS: Statistically significant (P < .01) cytomorphologic features of type 1 reaction were the presence of fragments of collagen and elastin; giant cells; giant cells exhibiting elastin phagocytosis; loose, epithelioid cell granulomas; and fibroblasts. Type 2 reaction was characterized in aspirates by the presence of an abundance of neutrophils in a background of lepromatous leprosy (P < .01). CONCLUSION: Criteria that are used in histopathology for the diagnosis of leprosy reactions can be applied satisfactorily to cytologic smears. A good correlation between clinical diagnosis and cytomorphology can be achieved. Multiple-site aspirates from the skin, nerve and lymph nodes are helpful in substantiating the diagnosis.
OBJECTIVE: To analyze the effects of a prospective peer review program on diagnostic accuracy in a routine cytopathology laboratory. STUDY DESIGN: For the study, 4,836 consecutive cases subjected to fine needle aspiration cytology (FNAC) over a one-year period were used. Nine pathologists performed both reporting and peer review functions. Disagreements were classified into "diagnostic errors" and "diagnostic discrepancies," depending on their impact on patient care. The effect of this review on turnaround time was statistically analyzed. A retrospective review of 4,025 cases from the preceding year was performed for comparison. RESULTS: Sixty-six cases with diagnostic disagreements were detected by prospective review. There were 28 diagnostic errors and 38 diagnostic discrepancies. The initial turnaround time for diagnostic FNAC in 90% of total cases was < 24 hours; mean delay for the remainder was 3.3 days. Prospective peer review added a further delay of 1 and 1.5 days, respectively. The number of diagnostic disagreements was significantly higher in the retrospective review (P < .01). CONCLUSION: Prospective peer review of diagnostic FNAC resulted in improved accuracy of diagnosis and reduced potential for inappropriate therapy; however, turnaround time was significantly increased.