title: Case 39-2016. A 74-Year-Old Man with Rectal Bleeding and a History of Prostate Cancer.
authors.affiliation: From the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Massachusetts General Hospital, and the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Harvard Medical School - both in Boston.
authors.forename: Theodore S
authors.initials: TS
authors.lastname: Hong
authors.affiliation: From the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Massachusetts General Hospital, and the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Harvard Medical School - both in Boston.
authors.forename: Phillip J
authors.initials: PJ
authors.lastname: Gray
authors.affiliation: From the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Massachusetts General Hospital, and the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Harvard Medical School - both in Boston.
authors.forename: Jill N
authors.initials: JN
authors.lastname: Allen
authors.affiliation: From the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Massachusetts General Hospital, and the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Harvard Medical School - both in Boston.
authors.forename: Paul C
authors.initials: PC
authors.lastname: Shellito
authors.affiliation: From the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Massachusetts General Hospital, and the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Harvard Medical School - both in Boston.
authors.forename: Kathryn P
authors.initials: KP
authors.lastname: Lowry
authors.affiliation: From the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Massachusetts General Hospital, and the Departments of Radiation Oncology (T.S.H., P.J.G.), Hematology (J.N.A.), Surgery (P.C.S.), Radiology (K.P.L.), and Pathology (L.R.Z.), Harvard Medical School - both in Boston.
authors.forename: Lawrence R
authors.initials: LR
authors.lastname: Zukerberg
mesh_terms: D000368:Aged; D001005:Anus Neoplasms / Q000000981:diagnostic imaging* / Q000532:radiotherapy / Q000821:virology; D001706:Biopsy; D001918:Brachytherapy / Q000009:adverse effects*; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging* / Q000532:radiotherapy / Q000821:virology; D003113:Colonoscopy; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D016609:Neoplasms, Second Primary / Q000000981:diagnostic imaging* / Q000532:radiotherapy; D027383:Papillomaviridae / Q000302:isolation & purification*; D011471:Prostatic Neoplasms / Q000473:pathology / Q000532:radiotherapy*; D050397:Radiotherapy, Intensity-Modulated