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Carotid body tumors are slow growing neck masses that arise from the neural crest cells at the carotid bifurcation. Majority are asymptomatic and are diagnosed incidentally. Surgical excision is accepted as the treatment of choice to reduce complications. In the present series, we report 10 cases of carotid body tumors and our institutional experience. All patients underwent radiological evaluation with an ultrasonography with Doppler, contrast enhanced computed tomography and MR angiography. 6 cases were operated by a transcervical excision. The tumor was excised in tototranscervically. One of the cases required saphenous vein graft intraoperatively due to vascular injury and also had postoperative vocal cord palsy. The rest had an uneventful recovery. Carotid body tumors although rare and seemingly indolent can cause substantial symptoms if left untreated. A prompt multi modality approach is needed for both diagnosis and treatment to avoid major complications. [ABSTRACT FROM AUTHOR]

Introduction: Benign lymphoid hyperplasia uncommonly involves the larynx. Involvement of glottis and subglottis is even rare, considering sparse lymphatic supply compared to supraglottis. Case Report: A young female presented to emergency with worsening breathing difficulty. After securing the airway, she had found to have circumferential glottis and subglottic mucosa covered firm swelling. Histopathological evaluation of the swelling showed it to be benign lymphoid hyperplasia. Coblation assisted excision of the lesion was done, and the patient became asymptomatic without any recurrence. Conclusion: Idiopathic lymphoid hyperplasia is a very rare entity to present as glottis and subglottic lesions. Probably, it's the first case to be reported in the literature as laryngeal involvement sparing the supraglottis. [ABSTRACT FROM AUTHOR]

Mass seed production of giant freshwater prawn; Macrobrachium rosenbergii (de Man, 1879) is a common practice for the last seven years in Contai-III of Purba Medinipur district; West Bengal, India, which imparts immense value in prawn farming. The present study was selected to find out the viability of new techniques. Primary field data from the prawn farmers was collected and mass seed production activity was studied in selected 10 ponds. Important physico-chemical parameters of water in ponds (P1- P10) were analyzed fortnightly in order to find out their co-relation with the production of post larvae. Ranges of water quality parameters throughout the study period (120 days) were studied for freshwater prawn larvae. Mean temperature (29.76±0.51)°C, D.O (4.01±0.11) mg/l, pH (8.08±0.12), salinity (11.96±0.42) ppt, alkalinity (138±2.18) mg/l, NH4-N (0.062±0.019) mg/l, NO2-N (0.26±0.098) mg-1, NO3-N (0.43±0.14) mg/l in ten experimental ponds were recorded. Mass larval culture experiments were carried out from naturally collected berried females or cultured berried female from other areas. Survival rate at post larval stages was 7.11-44.44%, which significantly varied from each other (P<0.05). The larval cycle completed within 20-25 days. Among 10 experimental ponds, the seed (Post Larvae) production varied from 15,00,000 (P2) to 2, 40,000(P9) per 0.1 ha. The net income varied from 1.48 - 10.30 lakh from 0.1 ha pond. The low input seed production process followed is highly suitable for small-scale farmers and can be an alternative to collection of wild post larvae from nature meet the demand of seed for culture as well as reduce resultant collateral damage to biodiversity while collecting seed. [ABSTRACT FROM AUTHOR]