Phil. Journal of Internal Medicine (Vol.62 No.3) CONTENTS ORIGINAL ARTICLE Timing of Initiation of Adjuvant Chemotherapy in Breast Cancer at Bataan General Hospital Among Early-Stage Breast Cancer patients from May 2015 to January 2020 Mariae Mistica Edquid MD, and Jose Enrique Y. Montoya MD Monitoring Adverse Events of Sinovac COVID-19 Vaccine (CoronaVacTM) in a Tertiary Government Hospital in Pangasinan Racquel S. Zaratan-Samole, MD, Kate Leslie Ann Navarro-Ayati, MD, and Ainstein Marie Villanueva-Misa, MD The Effect of mySugrTM Mobile App on Diabetes Self-Management in Filipino Patients with Type 2 Diabetes Mellitus: A Prospective Single-Arm Interventional Study Maria Honolina S. Gomez, MD, Nenuel Angelo B. Luna, MD, Dionise Ysabelle V. Bawal, MD, Marilyn Katrina C.Caro, MD, and Ma. Felisse Carmen S. Gomez, MD Acute Liver Injury and COVID 19 Disease Severity in a Tertiary Private Hospital in the Philippines Billy Joseph David, MD, Hanna Clementine Tan, MD, Armin Masbang, MD, and Jose Guillain Cataluña, MD Association Between Body Mass Index and Cognitive Impairment in Elderly Subjects with Type 2 Diabetes Mellitus: A Cross-Sectional Study Maria Guia Estrella A. Dela Cruz, MD, Michelle Co, MD, and Carter Rabo, MD Macrophage Activation Syndrome as Presenting Manifestation in Systemic Lupus Erythematosus: A Case Report Kristine Dominique T. Padiernos, MD, Rodeo V. Navarroza, MD, Jeremias T. Balgua, Jr, MD, and Rico Paolo Tee, MD Transverse Myelitis Unmasking Multiple Sclerosis After mRNA COVID-19 Vaccine: A Case Report Javish R. Jadwani, MD, Eloise D. Guadaña, MD, Cristina A. Dorado, MD, Alexander D. Abe, MD,3 and Jay S. Fonte, MD A Rare Case of Coexistence: Papillary Thyroid Carcinoma Dedifferentiated to Squamous Cell Carcinoma: A Case Report Mariel C. Enverga, MD and Thelma D. Crisostomo, MD Gastric Outlet Obstruction arising from Adhesions Secondary to Chronic Calculous Cholecystitis with Cholecystoduodenal Fistula Formation in an Immunocompetent Male: A Case Report Christmae Maxine P. Solon, MD, Janrei Jumangit, MD, Daniel Benjamin Diaz, MD, and Karen Batoctoy, MD A Rare Case of Systemic Mastocytosis in a 72-year-old Female with Gastrointestinal Bleeding Nathania Maxene P. Sianghio, MD, Maria Claudia Chavez, MD, Roli June Banaag, MD, Roberto De Guzman, MD