A fixation structure configured to fix a patient interface upon a patient, the fixation structure comprising: a body (302; 602), the body (302; 602) comprising: first and second regions, the first region configured to contact a portion of a patient's face and the second region configured to face outward from the patient's face; and first and second extensions (332B, 332A; 604B, 604A), the first and second extensions (332B, 332A; 604B, 604A) being pivotably attached to the body (302;602) and pivotable relative to the body (302;602), the first extension (332B; 604B) being completely removable from the body (302; 602), wherein the second extension (332A; 604A) is configured to pivot relative to the body (302; 602) and to secure a tube to the body (302; 602); wherein the second extension (332A; 604A) comprises a first region adapted to secure the tube and a second region adapted to secure the patient interface; and wherein the second region of the second extension (332A; 604A) comprises a first fastener (336A; 610A) adapted to attach to a complementary second fastener of the patient interface; wherein the first extension (332B; 604B) is configured to be completely removable from the body (302; 602) and positioned on another portion of the patient's face; and wherein the first extension (332B; 604B) comprises a first fixation element (336B; 610B) to couple with a first corresponding fixation element of a patient interface when positioned on another portion of the patient's face. a body (302; 602), the body (302; 602) comprising: first and second regions, the first region configured to contact a portion of a patient's face and the second region configured to face outward from the patient's face; and first and second extensions (332B, 332A; 604B, 604A), the first and second extensions (332B, 332A; 604B, 604A) being pivotably attached to the body (302;602) and pivotable relative to the body (302;602), the first extension (332B; 604B) being completely removable from the body (302; 602), first and second regions, the first region configured to contact a portion of a patient's face and the second region configured to face outward from the patient's face; and first and second extensions (332B, 332A; 604B, 604A), the first and second extensions (332B, 332A; 604B, 604A) being pivotably attached to the body (302;602) and pivotable relative to the body (302;602), the first extension (332B; 604B) being completely removable from the body (302; 602), wherein the second extension (332A; 604A) is configured to pivot relative to the body (302; 602) and to secure a tube to the body (302; 602); wherein the second extension (332A; 604A) comprises a first region adapted to secure the tube and a second region adapted to secure the patient interface; and wherein the second region of the second extension (332A; 604A) comprises a first fastener (336A; 610A) adapted to attach to a complementary second fastener of the patient interface; wherein the first extension (332B; 604B) is configured to be completely removable from the body (302; 602) and positioned on another portion of the patient's face; and wherein the first extension (332B; 604B) comprises a first fixation element (336B; 610B) to couple with a first corresponding fixation element of a patient interface when positioned on another portion of the patient's face.