Outcomes Based on Histological Tumor Necrosis and Predictive Clinical and Laboratory Parameters for Necrosis in Children With Osteosarcoma Treated on a Non-High Dose Methotrexate-Based Chemotherapy Backbone.

Background: Histopathological response to neoadjuvant chemotherapy (NACT) measured as tumor necrosis (TN) has been reported to be prognostic post-high-dose methotrexate (HDMTX)-based chemotherapy. We studied this on a non-HDMTX chemotherapy backbone.

Materials And Methods: Children ≤15 years, with osteosarcoma treated on OGS-2012 protocol and surgery post NACT from January 2013 to December 2020 were retrospectively analyzed.

Retrospective Study of Multimodality Imaging Features of Chondroblastoma.

Purpose: To evaluate the multimodality imaging features of chondroblastoma.

Materials And Methods: Retrospective analysis of imaging features of 52 cases of histopathologically proven chondroblastoma from 2010 to 2022 was performed. Radiographs were evaluated for lesion site, location, morphology, margins, matrix mineralization, cortical breach, periosteal reaction, eccentricity, and subarticular extension.

Impact of Surgical Timing (Primary, Delayed, or Second Look) on Surgical Morbidity and Outcomes in Malignant Germ Cell Tumor of the Ovary in Children.

Background: Malignant ovarian germ cell tumors (MOGCT) are rare in children. Surgery with or without chemotherapy is the primary treatment approach. This study aimed to analyze the impact of primary and delayed surgery on surgical morbidity and outcomes.

External Quality Assurance Helps Improve Infrastructure for Testing Breast Biomarkers Across a Lower- and Middle-Income Country: Our Experience With Breast Biomarker Testing in the National Cancer Grid External Quality Assurance System in India.

Context.—: Biomarkers in breast cancer need strict monitoring given their role in patient management.

Objective.

Spermatocytic tumor of testis: A case series of 26 cases elucidating unusual patterns with diagnostic and treatment dilemmas.

Background: Spermatocytic tumours are a rare subset of testicular tumours seen in elderly patients with distinct clinicopathological features and a favourable outcome. The typical presentation and characteristic histological features usually suffice for the diagnosis. Most of the cases are amenable to surgical excision.

Reclassification of Salivary Gland Aspirates Based on "The Milan System for Reporting Salivary Gland Cytology": A Five-Year Retrospective Study.

Introduction: The Milan System for reporting salivary gland cytopathology helps standardize reporting systems across institutions, improve communication between clinicians and pathologists and guide the clinical management of patients.

Aims: This study was undertaken to evaluate the utility of the Milan system classification in cytology reporting.

Settings And Design: The present study is a retrospective study conducted over a period of five years in tertiary care centre.

The clinical challenges and dilemma in the management of uncommon maxillary sinus tumors - A report of two cases.

Maxillary sinus is the common site for the nose and paranasal sinus tumors with diverse histopathological types and the treatment for each may differ. Making a histopathological diagnosis on occasion can be challenging. We had two patients presenting with upper alveolus growth in whom establishing the histopathological diagnosis was challenging.

Primary Alveolar Soft Part Sarcoma of Bone: A Rare Occurrence in 8 Patients, Posing a Diagnostic Challenge.

Context.—: Alveolar soft part sarcoma is a rare soft tissue tumor involving mainly deep soft tissue of the lower extremities. Primary bone involvement is extremely rare.

Remote Reporting from Home for Primary Diagnosis in Surgical Pathology: A Tertiary Oncology Center Experience during the COVID-19 Pandemic.

Background: The COVID-19 pandemic accelerated the widespread adoption of digital pathology (DP) for primary diagnosis in surgical pathology. This paradigm shift is likely to influence how we function routinely in the postpandemic era. We present learnings from early adoption of DP for a live digital sign-out from home in a risk-mitigated environment.

Unfavorable presentation but comparable outcome: Presentation and outcome of children with nodular lymphocyte predominant Hodgkin lymphoma from India.

Background: Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is an uncommon subtype of Hodgkin lymphoma (HL) with few published studies in children, entirely from North America and Europe. We analyzed clinical features and treatment outcome of pediatric NLPHL.

Procedure: Children less than 18 years of age diagnosed after histopathology review to have NLPHL between June 1998 and August 2016 were retrospectively analyzed.

Soft tissue tuberculosis - An unusual presentation of a common disease.

Tuberculosis (TB) has reached epidemic proportions in India with a myriad of clinical presentations. Extra pulmonary TB can present in a wide variety of clinical forms and its identification requires a high degree of clinical suspicion. Soft tissue infection by Mycobacteria is rare.

Programmed death-1 ligands PD-L1 and PD-L2 show distinctive and restricted patterns of expression in lymphoma subtypes.

The success of immunotherapy using immune checkpoint blockade in solid tumors and in relapsed/refractory classical Hodgkin lymphoma and chronic lymphocytic leukemia holds promise for targeted therapy in hematologic malignancies. Because efficacy of immunomodulatory therapy is correlated with numbers of cells that express programmed death (PD-1) ligands, we evaluated the expression of PD-L1 and PD-L2 proteins using immunohistochemistry in more than 702 diagnostic lymphoma biopsies. In classical Hodgkin lymphoma, PD-L1 and PD-L2 were expressed in 82% and 41% of cases, respectively, and PD-L1 but not PD-L2 expression correlated with Epstein-Barr virus in tumor cells.

Feasibility of Axillary Reverse Mapping and Clinicopathological Features Predicting ARM Node Metastasis in Breast Cancer-a Pilot Study.

The axillary reverse mapping (ARM) technique has been described as an attempt to map and preserve the upper extremity lymphatic drainage during axillary lymph node dissection (ALND) and/or SLNB. This technique is based on the hypothesis that the lymphatic pathway from the upper extremity is not involved by metastasis from primary breast cancer. The ARM node/s however, has been found, in various studies, to be involved with metastatic foci in patients with extensive axillary lymph node metastases.

A simplified scoring system to document variant patterns in nodular lymphocyte predominant Hodgkin lymphoma.

This study sought to quantify variant patterns in nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) using a three tier scoring system assessing five parameters, namely: (a) percentage of nodularity scored from 100 % to < 75%, (b) T cell rich areas (< 20% to > 50%), (c) type of nodules, (d) dendritic network, intact or lost, and (e) extranodular distribution of lymphocyte predominant cells (< 15% to > 50%), with final scores from 0 to 10. In the 72 patients assessed, the 5-year disease-free survival (DFS) in patients with score ≤ 6 was 92% vs. 20% in those with scores > 6.

Origin Use of CD4, CD8, and CD1a Immunostains in Distinguishing Mycosis Fungoides from its Inflammatory Mimics: A Pilot Study.

Unlabelled: Patch-stage/early mycosis fungoides (MF) is difficult to differentiate from benign dermatoses, despite several robust histologic criteria. Most studies include advanced lesions and data about early disease is limited.

Objectives: (1) To compare the CD4:CD8 ratio in patch-stage MF versus inflammatory mimics.

Extraocular sebaceous carcinoma: a series of three cases with varied presentation.

Background: Extraocular sebaceous carcinomas are rare cutaneous malignancies that account for only about 25% of all sebaceous carcinomas. The most common site of occurrence is the head/neck region. They are aggressive neoplasms that possess metastatic potential to regional or distant sites.

Segmental dilatation of sigmoid colon in a neonate: atypical presentation and histology.

Segmental dilatation of the colon is a rare disorder of colonic motility in children, often presenting with severe constipation in older infants, children, and occasionally adults. It may mimic the commoner Hirschsprung disease clinicoradiologically but differs in that the ganglion cell morphology and distribution are typically normal in the colon. We report a neonate with segmental dilatation of the sigmoid colon who had an atypical clinical presentation and describe certain abnormalities in bowel histology (hypertrophied muscularis propria, nerve plexus, and ganglion cells located within the circular layer rather than the normal myenteric location), for the first time in the English literature.

Assessment of HER-2/neu status in breast cancer using fluorescence in situ hybridization & immunohistochemistry: Experience of a tertiary cancer referral centre in India.

Background & Objectives: Determination of HER2 status in breast cancer has become important to identify potential candidates for anti-HER2 therapy. In this study we compared fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC) for the determination of HER2 status in breast cancer patients referred to a tertiary care referral centre.

Methods: A total of 200 cases of invasive breast cancer were evaluated for HER2 status using IHC and FISH and results were compared.