# Oncology, Outpatient Clinic C2-C5, Comprehensive Cancer Center Keywords: - [cancers](< /en/search?q=cancers >) - [cancer](< /en/search?q=cancer >) - [Comprehensive Cancer Center](< /en/search?q=Comprehensive Cancer Center >) - ... Show all keywords - [cancer treatment](< /en/search?q=cancer treatment >) - [bowel cancers](< /en/search?q=bowel cancers >) - [breast cancer](< /en/search?q=breast cancer >) - [rectal cancer](< /en/search?q=rectal cancer >) - [prostate cancer](< /en/search?q=prostate cancer >) - [Meilahti](< /en/search?q=Meilahti >) Doctors’ and nurses’ appointments take place in the outpatient clinics in Comprehensive Cancer Center, and drug therapy for cancer is administered in the Medical Treatment Unit. You will receive an invitation to arrive at our clinic and for treatment on the basis of a referral. Before starting your treatment, you will usually visit the laboratory and have the required medical imaging examinations, as well as have a physician's appointment. Your actual treatment plan will be devised during an appointment with one of the clinic's physicians. Please arrive at the outpatient clinic on time. In sudden emergency matters, please contact the on-call hospital in your area. ### Outpatient units’ new locations in the Comprehensive Cancer Center Floor 2Coagulation Disorder Unit Follow-up Outpatient Clinic for Young AdultsFloor 3Comprehensive Cancer Center’s Clinical Trial Unit Oncology appointments and Medical Treatment UnitFloor 4Oncology appointments and Medical Treatment UnitFloor 5Oncology appointments and Medical Treatment Unit Hematology appointments ## [ Maisa Portal (opens in new window, links to another website) ](https://www.maisa.fi/maisa/Authentication/Login?lang=britishenglish) Maisa.fi You can use our online services by signing in to the Maisa Portal. Once your treatment with us begins, you will receive information on the services you can access in Maisa. These include appointment booking and preliminary information forms, for example. Click here to go to Maisa's sign-in page  ## [ Care pathways for cancer ](/en/patient/treatments-and-examinations/cancer) The care pathways provide information about different cancers, diagnostic studies related to the disease, and the different stages of treatment at HUS. Read more about the care pathways for cancer  ## [ Patient Guide ](/en/patient/patient-guide) The Patient Guide site answer the most common questions you might have before, during and after treatment. See Patient Guide site here  ## Contact information and opening hours #### Visiting address Comprehensive Cancer Center Haartmaninkatu 4 Helsinki Floors 2-5 #### Postal address P.O. Box 180 00029 HUS ### The contact center of the Comprehensive Cancer Center The operators will connect your call to the right professional either as a direct call or as a callback request. [ Phone, The contact center of the Comprehensive Cancer Center: 09 471 74900 ]()telephone hours: Mon–Fri 7:30–16:00 ### Fax [ Phone, Fax: 09 471 74247 ]() #### Opening hours Mon–Fri 8:00–15:00 ## Find us here ### [ Comprehensive Cancer Center ](/en/patient/hospitals-and-other-units/comprehensive-cancer-center)  ## Unit's services ### [ Cancer treatment ](/en/patient/treatments-and-examinations/cancer-treatment)  ### [ Support during cancer treatment ](/en/patient/treatments-and-examinations/support-during-cancer-treatment)  ### [ Support for young adults with cancer ](/en/patient/treatments-and-examinations/support-young-adults-cancer)  ## Specialists ### [ Tia Aalto-Viljakainen ](/en/person/tia-aalto-viljakainen) Chief Physician Comprehensive Cancer Center, Solid Tumors ### [ Aija Knuuttila ](/en/person/aija-knuuttila) Chief Physician Comprehensive Cancer Center, Solid Tumors ### [ Susanna Mannisto ](/en/person/susanna-mannisto) Chief Physician Comprehensive Cancer Center, Solid Tumors ### [ Siru Mäkelä ](/en/person/siru-makela) Chief Physician Comprehensive Cancer Center, Solid Tumors ### [ Kaija Vasala ](/en/person/kaija-vasala) Chief Physician Comprehensive Cancer Center, Solid Tumors ### [ Anna Lehtonen ](/en/person/anna-lehtonen) Nurse Manager Comprehensive Cancer Center, Solid Tumors ### [ Katariina Elomaa ](/en/person/katariina-elomaa) Nurse Manager Comprehensive Cancer Center, Solid Tumors Show all ## Further information on this topic ### [ Instructions and additional information for cancer patients ](/en/patient/treatments-and-examinations/cancer/instructions-and-additional-information-cancer-patients) On this page you will find instructions, guides and useful links to support your cancer treatment. Updated: 10.09.2025 Print this page