Background: Hyalinizing clear cell carcinomas of tracheobronchial origin are very rare salivary gland type tumors accounting for less than 1% of lung tumors with only 13 cases reported to date. Their radiological features, morphological spectrum, and molecular features are not well described. Aim: To perform a clinicopathological analysis of primary pulmonary hyalinizing clear cell carcinomas. Method: A retrospective search of primary pulmonary hyalinizing clear cell carcinomas was conducted from authors’ institutions and the clinicopathological features including details of molecular testing were analyzed. Results: Five primary pulmonary hyalinizing clear cell carcinomas were identified. The mean patient age at diagnosis was 48.2 years (range: 33-64 years). Three patients were women. All patients were nonsmokers and 3 were symptomatic; 2 were detected incidentally during health screening. The tumors were located in the main lobar bronchi ranging from 1.3 to 4.9 cm in maximum dimension. Microscopy showed cords and nests of at least, focally clear tumor cells. Mucin cysts lacking goblet cells were seen. All tumors were uniformly positive for p40, p63, AE1/AE3, keratin 7, and epithelial membrane antigen but negative for TTF1, KIT, neuroendocrine markers, and other myoepithelial markers. All cases showed Ewing sarcoma breakpoint region 1 ( EWSR1) gene rearrangement. Perineural invasion and lymph node metastases were detected in patient 5. Two patients with available follow-up data were recurrence-free until 4 years (patient 1) and 9 months (patient 5) after resection. Conclusion: The present series adds to the scant available literature on primary pulmonary hyalinizing clear cell carcinomas highlighting the characteristic histomorphology, immunoprofiles, and benign outcomes of these rare tumors.

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Introduction: Anti-GBM nephritis in the pediatric age group is exceedingly rare with concurrent additional pathologies being even rarer. Tissue diagnosis requires a combination of crescentic histomorphology, immunofluorescence showing “Paint brush stroke” pattern of linear IgG or rarely IgA and serum anti-GBM antibodies subject to the disease course and treatment. The authors describe one such case with a dual pathology involving IgA nephropathy and atypical anti-GBM disease. Case presentation: A thirteen-year-old girl presenting with features of rapidly progressive glomerulonephritis underwent a renal biopsy showing a mesangioproliferative histology with crescents and an immunofluorescence pattern indicating a dual pathology of IgA Nephropathy and Anti GBM Nephritis. Additional ancillary testing including staining for IgG subclasses and galactose deficient IgA (KM55) helped to confirm the diagnosis. She responded to steroid pulses and plasma exchange therapy, was off dialysis after 8 weeks with serum creatinine of 1.5 mg/dl however remains proteinuric at last follow up. Conclusion: Concurrent Anti-GBM nephritis and IgA nephropathy is a rare occurrence and possibly arises from a complex interaction between the anti-GBM antibodies and the basement membrane unmasking the antigens for IgA antibodies. Additional newer techniques like immunofluorescence for KM 55 are helpful in establishing the dual pathology.

Background: "Line sign," "cookie cutter sign," "square biopsy sign," "high eccrine glands sign" have been previously described in morphoea and lichen sclerosus. We found focal areas of thickened collagen bundles with lymphocytes interspersed between them in several biopsies of these conditions. Materials and Methods:We reviewed slides of sclerosing disorders obtained from the archives of the pathology department in our hospital for the period 2013-2019.Results: A total of 73 slides including 40 of lichen sclerosus, 24 of morphea, 2 of lichen sclerosus-morphea overlap, and 7 of systemic sclerosis were evaluated. Lymphocytes were noted between sclerotic collagen bundles in 46 (63%) slides, being most common in lichen sclerosus (80%, 32/40) followed by morphea (50%, 12/24), whereas it was seen in one case each of lichen sclerosus with morphea overlap (50%, 1/2) and systemic sclerosis (14.3%, 1/7). The finding was noted in the upper dermis in 20 of 32 (62.5%) slides of lichen sclerosus and in both the superficial and deep dermis in 11 (91.7%) of 12 slides of morphea. Conclusion:Lymphocyte-peppered sclerotic collagen may be a useful histological clue to the diagnosis of lichen sclerosus, morphea, and systemic sclerosis.

Introduction: Thyroid swelling is one of the most common disease presenting to otorhinolaryngology out patient. Fine needle aspiration cytology is key point in planning the surgical management. The discrepancy between cytology and histology reported in wide range depending upon centres. We planned to conduct this study with aim of knowing the sensitivity of cytology which can guide the need of surgical or observational treatment. Methods: Our study is prospective enrolling the patients with thyroid swelling who underwent surgical treatment between 1st October 2020 to 11th November 2021. Clinical, cytological and histological parameters were recorded. Accounting histology as gold standard, sensitivity, specificity and accuracy of fine needle cytology were calculated. The correlation was evaluated by chi square test. The p value of ≤0.05 was considered significant. Results: The most common age group reporting was 20-40 years accounting for 68.6% of cases with the female predominance (92.2%). The accuracy of fine needle cytology in detecting non neoplastic, neoplastic benign and neoplastic malignant lesion were 96.0%, 96.0% and 100.0 % respectively. Conclusions: Fine needle cytology is good tool for deciding surgical management for thyroid nodule and recommended for all cases.