HISTORY General Data: OR, 24 year-old male, single, living in Cabatuan, Isabela Chief complaint: Enlarging abdominal mass with sharp pain HISTORY OF PRESENT ILLNESS 1 month PTA (May 2008) Enlarging abdomen with painful, sharp sensation described as “hinihiwa sa tiyan” with concomitant dizziness, cold sweats and fever, resolved upon resting Intake of unprescribed amoxicillin and mefenamic acid Pain persisted for 4 days HISTORY OF PRESENT ILNESS 2 weeks PTA sought consult at a local hospital; UTZ of the lower abdomen revealed an 18cm mass referred to PGH for further management. HISTORY OF PRESENT ILLNESS June 2008 admitted to PGH ward 3, with an enlarged abdomen decreased appetite, irregular bowel movements (normally once a day, but at that time, he defecated every 2 days), but no difficulty of defecation weight loss of approximately 4kgs (from 52 to 48 kgs), dysuria, urinary incontinence, and a change in urine color from the usual yellow to white. PAST MEDICAL HISTORY born with both testes undescended; left testes descended at age 6. (+) mumps during elementary (+) UTI episode (1) when he was 18 or 19 years of age, with concomitant right flank pain. He took unrecalled medications for 7 days with resolution of symptoms. FAMILY MEDICAL HISTORY (+) TB, mother's side (-) cryptorchidism (-) cancer (-) heart disease (-) hypertension (-) stroke (-) diabetes (+) asthma PERSONAL-SOCIAL HISTORY finished 2 years of vocational school and used to work as an electrician lives with his father, mother and 3 siblings pays for his chemotherapy with the help of relatives abroad. REVIEW OF SYSTEMS (+) weight loss, 4 kgs (-) nausea, vomiting (-) anorexia (+) diarrhea for one week, after chemotherapy (-) constipation (+) dysuria, incontinence (+) numbness of R flank (+) abdominal pain (+) knee pain in the morning upon arising (-) chest pain, palpitations (-) easy fatigability (-) cough DIFFERENTIALS Colon Cancer Rule In Rule Out Palpable abdominal mass Abdominal pain Change in bowel habits Weight loss Young age (-) rectal bleeding (-) signs of anemia (-) note of change in stool color Rule In Rule Out Urinary Incontinence Abdominal Pain Urine Color Abnormal Dysuria Palpable Rule In abdominal mass (-) hematuria (-) anemia (-) fatigue, weakness (-) pale skin Urinary Bladder Cancer Lymphoma Abdominal mass Fever sweats Weight loss Testicular Cancer Rule In History of cryptochordism Abdominal mass (testicular lump) Abdominal discomfort Rule Out (-) peripheral adenopathy (-) fatigue (-)hepatosplenomegaly (-) generalized itching Rule Out Mass is painful Cannot be ruled out DIFFERENTIALS Inflammatory Bowel Disease (Crohn’s) Rule In Abdominal pain fever Rule Out No diarrhea No fatigability Cannot be ruled out Intestinal Obstruction Rule In Rule Out Abdominal pain Fever (-) abdominal distention (-) nausea, vomiting (-) diarrhea (-) constipation (-) history Rule Out of surgery Young age (-) nausea, vomiting Diverticulitis Rule In Abdominal pain Fever Weight loss Abdominal Abscess Rule In Abdominal pain Fever Rule Out (-) history of abdominal surgery PE At the time of consult (prior to treatment): Abdomen: Enlarged abdomen, size consistent with 5-month pregnant abdomen Mass palpable, ~20cm in largest diameter, at left lower hemiabdomen Genitals: Empty scrotal sac on the right Normal testicle on the left, (-) masses/nodules, lesions, tenderness Essentially normal findings for other systems DIFFERENTIALS Colon Cancer Rule In Rule Out Palpable abdominal mass Abdominal pain Change in bowel habits Weight loss Rule In Young age (-) rectal bleeding (-) signs of anemia (-) note of change in stool color Rule Out Urinary Incontinence Abdominal Pain Urine Color Abnormal Dysuria Palpable abdominal mass Rule In Abdominal mass Fever sweats Weight loss (-) hematuria (-) anemia (-) fatigue, weakness (-) pale skin Rule In History of cryptochordism Abdominal mass (testicular lump) Abdominal discomfort Rule Out Mass is painful Cannot be ruled out Urinary Bladder Cancer Lymphoma Testicular Cancer Rule Out (-) peripheral adenopathy (-) fatigue (-)hepatosplenomegaly (-) generalized itching DIFFERENTIALS Inflammatory Bowel Disease (Crohn’s) Rule In Abdominal pain fever Rule Out No diarrhea No fatigability Cannot be ruled out Intestinal Obstruction Rule In Rule Out Abdominal pain Fever (-) abdominal distention (-) nausea, vomiting (-) diarrhea (-) constipation (-) history Rule Out of surgery Young age (-) nausea, vomiting Diverticulitis Rule In Abdominal pain Fever Weight loss Abdominal Abscess Rule In Abdominal pain Fever Rule Out (-) history of abdominal surgery IMAGING STUDIES Scrotal Ultrasound: for any male with suspicious or questionable testicular mass on palpation • Abdominal and Pelvic CT: to ID metastasis to retroperitoneal LN; also to determine presence of cryptochordism • Chest CT and Xray: to confirm abnormal chest findings o In the use of bleomycin, life-threatening pulmonary toxic effects can occur so the drug should be discontinued if early signs of pulmonary toxic effects develop. • ABDOMINAL CT SCAN IN OUR PATIENT… Plain and contrast axial scan of the whole abdomen shows: There is a large solid mass measuring 18.0 x 11.0 x 14.0 cm noted in the peritoneal cavity of with close attachment to the mesentery. There are small packets of contrast with areas of fluid. The liver is normal in size with low attenuation of the parenchyma. The gall bladder has no intraluminal densities. The pancreas, and spleen is unremarkable. Both kidneys are normal in size with good function noted. The prostate is normal in size. The abdominal aorta is unremarkable. BLOOD CHEMISTRY Result BUN Creatinine Total Bilirubin Direct Bilirubin Indirect Bilirubin Alkaline Phosphatase AST ALT LDH (done twice) Sodium Potassium Chlorine Interpretation 12.7 mmol/L 167.7 umol/L 12.5 umol/L 0.5 umol/L 12 umol/L 224 U/L PGH Normal Values 2.6-6.4 mmol/L 53-115 umol/L 0-17.1 umol/L 0-5 umol/L 3.4-13.7 umol/L 50-136 U/L 58 U/L 36 U/L 2080 U/L 142 mmol/L 4.2 mmol/L 103 mmol/L 15-37 U/L 35-65 U/L 100-190 U/L 140-148 mmol/L 3.6-5.2 mmol/L 100-108 mmol/L High High High High High SERUM TUMOR MARKERS * AFP (Alpha-Feto Protein) * Beta-hCG (Beta Subunit of Human Chorionic Gonadotropin) * LDH (Lactate Dehydrogenase) AFP • • • A tumor marker which is elevated when yolk sac elements are present (i.e. nonseminomatous GCT). Expected finding (if seminoma): low levels Tumors that appear to have a seminoma histology but that have elevated serum levels of alphafetoprotein (AFP) should be treated as nonseminomas Patient’s Data: Taken 10/31/2008 AFP = 1.12 IU/ml (N: 0-11.3 IU/ml) BETA-HCG • In 5-10% of seminoma patients, this may be elevated; levels may be correlated with metastasis but not with overall survival o If levels do not normalize after orchiectomy, treatment approach should be that for NSGCT Patient’s Data: Taken 10/30/2008 hCG = 141.4 IU/ml (N: 0-5.0 mIU/ml) LDH • • Less specific for GCTs, but levels can correlate with overall tumor burden Increases in the serum level are influenced primarily by tumor burden and growth rate, cell proliferation and death. Patient’s Data: LDH = 2080 U/L (N: 100-190 U/L) Taken 10/30/2008 PLACENTAL ALKALINE PHOSPHATASE (PLAP) PLAP has been distinguished from the common tissue alkaline phosphatases by its heat resistance, its inhibition by L-phenylalanine, and its immunological properties. Raised serum concentrations of PLAP are found in seminomas and NSGCT, as well as in ovarian tumors. Serum values were more frequently elevated in seminoma patients than in nonseminoma patients unless the latter disease was far advanced. SUMMARY S LDH hCG† (mIU/mL) AFP (ng/mL) Sx Not assessed Not assessed Not assessed S0 £N and Normal and Normal S1 <1.5 x N and <5,000 and <1,000 S2 1.5-10 x N or 5,000-50,000 or 1,000-10,000 S3 >10 x N or >50,000 or >10,000 HISTOLOGY Patient Results Cell findings were consistent with seminoma; immunohistochemical staining for PLAP was suggested for confirmation. There were three specimens submitted: “Abd Mass Core”: cream tan irregular tissue fragments with an aggregate diameter of 0.5 cm. Block all. “Abd Mass Cell Block”: 20 cc cream white turbid fluid. For cell block. “Abd Mass FNAB”: 8 unstained slides with smear. For staining and interpretation Taken July 19, 2008 (PGH) Seminoma PATHOGENESIS OF SEMINOMA Cryptorchidism - several-fold higher risk of Germ Cell Tumors (GCT) ,~10-40x Abdominal cryptorchid testes > inguinal cryptorchid testes. Orchiopexy recommended Testicular feminization - ↑ risk of testicular GCT OTHER RISK FACTORS Trauma Mumps prenatal exposure to maternal hormones Familial risk for testicular CA (Hemminki et al, 2004) 4-fold increased risk in a male with a father who had a GCT 9-fold increased risk if a brother was affected MOLECULAR PATHOGENESIS An isochromosome of the short arm of chromosome 12 [i(12p)] is pathognomonic for GCT of all histologic types. Excess 12p copy number occurs in nearly all GCTs, but the genes are still unidentified. PATHOLOGY OF SEMINOMA COURSE OF THE TUMOR Right testicular tumor interaortocaval lymph nodes Left testicular tumor para-aortic lymph nodes Lymphatic involvement extends cephalad retrocrucal, posterior mediastinal, and supraclavicular lymph nodes PRIMARY TUMOR (T) REGIONAL LYMPH NODES (N) DISTANT METASTASIS (M) AND SERUM TUMOR MARKERS (S) SERUM TUMOR MARKERS LDH hCG (mIU/ml) AFP (ng/ml) S0 N N N S1 < 1.5 x N < 5000 < 1000 S2 1.510 x N 5000 – 50,000 1000 – 10,000 S3 > 10 x N > 50,000 > 10,000 Patient’s values 2, 080 141.4 IU/ml 1.12 IU/ml (Normal: 100-190) (Normal: 0-5) (Normal: 0-11.3) Initial laboratory results done prior to treatment, as well as the history strongly suggest a diagnosis of testicular carcinoma, seminomatous type. The stage of the disease, as well as the capacity of the patient will determine the course of treatment. 1. METASTATIC WORK-UP Usual pattern of metastasis of seminoma: TESTS TO ORDER Examination of the other testicle CT of the abdomen Chest X-ray CT of the chest Liver ultrasound 2. TREATMENT BASED ON STAGING Treatment Stage Extent of Disease Seminoma Nonseminoma IA Testis only, no vascular/lymphatic invasion (T1) Radiation therapy RPLND or observation IB Testis only, with vascular/lymphatic invasion (T2), or extension through tunica albuginea (T2), or involvement of spermatic cord (T3) or scrotum (T4) Radiation therapy RPLND IIA Nodes < 2 cm Radiation therapy RPLND or chemotherapy often followed by RPLND IIB Nodes 2–5 cm Radiation therapy RPLND +/– adjuvant chemotherapy or chemotherapy followed by RPLND IIC Nodes > 5 cm Chemotherapy Chemotherapy, often followed by RPLND III Distant metastases Chemotherapy Chemotherapy, often followed by surgery (biopsy or resection) * Harrison’s Principles of Internal Medicine, 17th edition CHEMOTHERAPY DRUGS FOR TESTICULAR CA Drugs Function Bleomycin (Blenoxane) Composed of cytotoxic glycopeptide antibiotics, which appear to inhibit DNA synthesis with some evidence of RNA and protein synthesis inhibition to a lesser degree; used in the management of several neoplasms as a palliative measure. Etoposide (VP-16) Arrests cells in the G2 portion of the cell cycle and induces DNA 2 doses of 500 mg/m strand breaks by interacting with DNA topoisomerase II and per cycle forming free radicals Cisplatin (Platinol, Inorganic metal complex thought to act analogously to alkylating Platinol-AQ) agents; inhibits DNA synthesis and thus cell proliferation by doses of 100 mg/m2 causing DNA crosslinks and denaturation of double helix. per cycle OTHER DRUGS FOR PRIMARY, HIGH-RISK, OR SALVAGE PROTOCOLS Drugs Function Ifosfamide (Ifex) Related to nitrogen mustards and is a synthetic analog of cyclophosphamide; inhibits DNA and protein synthesis and thus cell proliferation by causing DNA cross-linking and denaturation of double helix. Vinblastine (AlkabanAQ, Velban) Inhibits microtubule formation, which in turn, disrupts the formation of mitotic spindle, causing cell proliferation to arrest at metaphase. 3. RISK DIRECTED CHEMOTHERAPY Risk Nonseminoma Seminoma Good Gonadal or retroperitoneal primary site Absent nonpulmonary visceral metastases AFP < 1000 ng/mL Beta-hCG < 5000 mIU/mL LDH < 1.5 x upper limit or normal (ULN) Any primary site Absent nonpulmonary visceral metastases Any LDH, Hcg Intermediate Gonadal or retroperitoneal primary site Absent nonpulmonary visceral metastases AFP 1000–10,000 ng/mL Beta-hCG 5000–50,000 mIU/mL LDH 1.5–10 x ULN Any primary site Presence nonpulmonary metastases Any LDH, hCG Mediastinal primary site Presence of nonpulmonary visceral metastases AFP >10,000 ng/ML Beta-hCG > 50,000 mIU/mL LDH > 10 x ULN No patients classified as poor prognosis Poor of visceral ACTUAL MANAGEMENT November 2008 transferred to the Cancer Institute; set to receive chemotherapy, but was delayed due to financial constraints. difficulty defecating, difficulty urinating and anorexia. HISTORY OF PRESENT ILNESS January 18, 2009 started first of six cycles of chemotherapy (Carboplatin, Bleomycin, and Etoposide) every 21 days, each cycle lasting 5 days. HISTORY OF PRESENT ILLNESS Recently currently on the second day of the last cycle reported an increase in appetite since beginning his chemotherapy, return of regular bowel movements and urination abdominal mass has also visibly reduced in size In addition to chemotherapy, the patient is on continuous intravenous hydration while undergoing chemotherapy to ensure proper excretion of the drugs For referral to nephrology for assessment of kidneys after the chemotherapy cycles ABDOMEN: Flat abdomen (-) visible masses, lesions Normoactive bowel sounds (-) tenderness, organomegaly Generally tympanitic, aside from left lower hemiabdomen Abdominal mass at left lower hemiabdomen: 10cm x 6cm on percussion; 7cm x 6cm on deep palpation Liver span: 8cm Intact Traube’s space (-) fluid wave, shifting dullness GENITALS: Circumcised (-) penile discharge and lesions along the shaft and scrotal sac Pubic hair is absent probably due to chemotherapy (-) scrotal swelling or discoloration Empty scrotal sac on the right Left testicle is smooth, non tender and firm; nontender epididymis (-) inguinal or femoral hernia Nonpalpable inguinal lymph nodes INTERNATIONAL GERM CELL CONSENSUS PROGNOSTIC CLASSIFICATION SYSTEM FOR SEMINOMA Good Prognosis Any primary site No pulmonary visceral metastases Normal AFP; any hCG or LDH Intermediate Prognosis Testis or retroperitoneal primary site Normal AFP; any hCG or LDH Nonpulmonary visceral metastases Campbell’s Urology, 8th Ed. All stages have at least a 90% cure rate Stage I is 98%-100% Stage II (B1/B2 nonbulky) is 98%-100% Stage II (B3 bulky) and stage III have a 90% complete response to chemotherapy and an 86% durable response rate to chemotherapy Second cancers and cardiac disease among long-term survivors Patients with testicular cancer are at an increased risk of secondary cancers (malignant mesothelioma and those of the lung, colon, bladder, pancreas, and stomach Patients with seminoma need counseling and long-term follow-up PLANS FOR THE PATIENT • • • • • Check bHCG, LDH: if levels became lower, tx might be working. If not… Repeat biopsy (if consistent with NSGCT, use tx approach for NSGCT) Repeat CT (to check extent of mass left postchemotherapy; also, to check for possible metastasis?) If with testicular mass, scrotal UTZ Chest X-ray (if with abn findings, confirm with chest CT to check for mets)